Improve login and registration pages (#2794)

* Keep the user on login page on failure

* Show an error if username already exists

* Check the password format in the backend

* Return a better message if username is invalid

* Add a title to the login page

* wip: Improve look of login and register pages

* Set a capital M in username help message

On the registration page, username tip started with a minuscule, while
the password tip started with a capital.

* Change message if username is taken

27 files changed, 117 insertions, 12 deletions

diff --git a/app/i18n/cz/gen.php b/app/i18n/cz/gen.php
index d9ea95e2b..bf1efeadd 100644
--- a/app/i18n/cz/gen.php
+++ b/app/i18n/cz/gen.php
@@ -43,7 +43,7 @@ return array(
 		'reset' => 'Reset přihlášení',
 		'username' => array(
 			'admin' => 'Název administrátorského účtu',
-			'format' => '<small>maximálně 16 alfanumerických znaků</small>',
+			'format' => '<small>Maximálně 16 alfanumerických znaků</small>',
 			'_' => 'Uživatel',
 		),
 	),
diff --git a/app/i18n/cz/user.php b/app/i18n/cz/user.php
index 52197ad46..32614cc36 100644
--- a/app/i18n/cz/user.php
+++ b/app/i18n/cz/user.php
@@ -29,9 +29,16 @@ return array(
 			'welcome' => 'Welcome %s,',	// TODO - Translation
 		),
 	),
+	'password' => array(
+		'invalid' => 'The password is invalid.',	// TODO - Translation
+	),
 	'tos' => array(
 		'feedback' => array(
 			'invalid' => 'You must accept the Terms of Service to be able to register.',	// TODO - Translation
 		),
 	),
+	'username' => array(
+		'invalid' => 'The username is invalid.',	// TODO - Translation
+		'taken' => 'The username %s is taken.',	// TODO - Translation
+	),
 );
diff --git a/app/i18n/de/gen.php b/app/i18n/de/gen.php
index 4e5787d83..43fbcfe10 100644
--- a/app/i18n/de/gen.php
+++ b/app/i18n/de/gen.php
@@ -43,7 +43,7 @@ return array(
 		'reset' => 'Zurücksetzen der Authentifizierung',
 		'username' => array(
 			'admin' => 'Administrator-Nutzername',
-			'format' => '<small>maximal 16 alphanumerische Zeichen</small>',
+			'format' => '<small>Maximal 16 alphanumerische Zeichen</small>',
 			'_' => 'Nutzername',
 		),
 	),
diff --git a/app/i18n/de/user.php b/app/i18n/de/user.php
index 37a038383..d9bfb3db2 100644
--- a/app/i18n/de/user.php
+++ b/app/i18n/de/user.php
@@ -29,9 +29,16 @@ return array(
 			'welcome' => 'Willkommen, %s,',
 		),
 	),
+	'password' => array(
+		'invalid' => 'The password is invalid.',	// TODO - Translation
+	),
 	'tos' => array(
 		'feedback' => array(
 			'invalid' => 'Sie müssen die Nutzungsbedingungen akzeptieren um sich zu registrieren.',
 		),
 	),
+	'username' => array(
+		'invalid' => 'The username is invalid.',	// TODO - Translation
+		'taken' => 'The username %s is taken.',	// TODO - Translation
+	),
 );
diff --git a/app/i18n/en/gen.php b/app/i18n/en/gen.php
index 43626d1dc..747b92109 100644
--- a/app/i18n/en/gen.php
+++ b/app/i18n/en/gen.php
@@ -43,7 +43,7 @@ return array(
 		'reset' => 'Authentication reset',
 		'username' => array(
 			'admin' => 'Administrator username',
-			'format' => '<small>maximum 16 alphanumeric characters</small>',
+			'format' => '<small>Maximum 16 alphanumeric characters</small>',
 			'_' => 'Username',
 		),
 	),
diff --git a/app/i18n/en/user.php b/app/i18n/en/user.php
index 3ba6d930f..fe8e2aa7c 100644
--- a/app/i18n/en/user.php
+++ b/app/i18n/en/user.php
@@ -29,9 +29,16 @@ return array(
 			'welcome' => 'Welcome %s,',
 		),
 	),
+	'password' => array(
+		'invalid' => 'The password is invalid.',
+	),
 	'tos' => array(
 		'feedback' => array(
 			'invalid' => 'You must accept the Terms of Service to be able to register.',
 		),
 	),
+	'username' => array(
+		'invalid' => 'The username is invalid.',
+		'taken' => 'The username %s is taken.',
+	),
 );
diff --git a/app/i18n/es/gen.php b/app/i18n/es/gen.php
index 0d03c1ad8..3174a0b58 100755
--- a/app/i18n/es/gen.php
+++ b/app/i18n/es/gen.php
@@ -43,7 +43,7 @@ return array(
 		'reset' => 'Reinicar identificación',
 		'username' => array(
 			'admin' => 'Nombre de usuario del Administrador',
-			'format' => '<small>máximo 16 caracteres alfanuméricos</small>',
+			'format' => '<small>Máximo 16 caracteres alfanuméricos</small>',
 			'_' => 'Nombre de usuario',
 		),
 	),
diff --git a/app/i18n/es/user.php b/app/i18n/es/user.php
index 52197ad46..32614cc36 100644
--- a/app/i18n/es/user.php
+++ b/app/i18n/es/user.php
@@ -29,9 +29,16 @@ return array(
 			'welcome' => 'Welcome %s,',	// TODO - Translation
 		),
 	),
+	'password' => array(
+		'invalid' => 'The password is invalid.',	// TODO - Translation
+	),
 	'tos' => array(
 		'feedback' => array(
 			'invalid' => 'You must accept the Terms of Service to be able to register.',	// TODO - Translation
 		),
 	),
+	'username' => array(
+		'invalid' => 'The username is invalid.',	// TODO - Translation
+		'taken' => 'The username %s is taken.',	// TODO - Translation
+	),
 );
diff --git a/app/i18n/fr/user.php b/app/i18n/fr/user.php
index 0c596636c..37a9025f1 100644
--- a/app/i18n/fr/user.php
+++ b/app/i18n/fr/user.php
@@ -29,9 +29,16 @@ return array(
 			'welcome' => 'Bienvenue %s,',
 		),
 	),
+	'password' => array(
+		'invalid' => 'Le mot de passe est invalide.',
+	),
 	'tos' => array(
 		'feedback' => array(
 			'invalid' => 'Vous devez accepter les conditions générales d’utilisation pour pouvoir vous inscrire.',
 		),
 	),
+	'username' => array(
+		'invalid' => 'Le nom d’utilisateur est invalide.',
+		'taken' => 'Le nom d’utilisateur %s est pris.',
+	),
 );
diff --git a/app/i18n/he/gen.php b/app/i18n/he/gen.php
index 8e13686bb..85fcc0979 100644
--- a/app/i18n/he/gen.php
+++ b/app/i18n/he/gen.php
@@ -43,7 +43,7 @@ return array(
 		'reset' => 'איפוס אימות',
 		'username' => array(
 			'admin' => 'שם משתמש של המנהל',
-			'format' => '<small>maximum 16 alphanumeric characters</small>',	// TODO - Translation
+			'format' => '<small>Maximum 16 alphanumeric characters</small>',	// TODO - Translation
 			'_' => 'שם משתמש',
 		),
 	),
diff --git a/app/i18n/he/user.php b/app/i18n/he/user.php
index 52197ad46..32614cc36 100644
--- a/app/i18n/he/user.php
+++ b/app/i18n/he/user.php
@@ -29,9 +29,16 @@ return array(
 			'welcome' => 'Welcome %s,',	// TODO - Translation
 		),
 	),
+	'password' => array(
+		'invalid' => 'The password is invalid.',	// TODO - Translation
+	),
 	'tos' => array(
 		'feedback' => array(
 			'invalid' => 'You must accept the Terms of Service to be able to register.',	// TODO - Translation
 		),
 	),
+	'username' => array(
+		'invalid' => 'The username is invalid.',	// TODO - Translation
+		'taken' => 'The username %s is taken.',	// TODO - Translation
+	),
 );
diff --git a/app/i18n/it/gen.php b/app/i18n/it/gen.php
index b588dc5a3..559ed4a2a 100644
--- a/app/i18n/it/gen.php
+++ b/app/i18n/it/gen.php
@@ -43,7 +43,7 @@ return array(
 		'reset' => 'Reset autenticazione',
 		'username' => array(
 			'admin' => 'Username amministratore',
-			'format' => '<small>massimo 16 caratteri alfanumerici</small>',
+			'format' => '<small>Massimo 16 caratteri alfanumerici</small>',
 			'_' => 'Username',	// TODO - Translation
 		),
 	),
diff --git a/app/i18n/it/user.php b/app/i18n/it/user.php
index 52197ad46..32614cc36 100644
--- a/app/i18n/it/user.php
+++ b/app/i18n/it/user.php
@@ -29,9 +29,16 @@ return array(
 			'welcome' => 'Welcome %s,',	// TODO - Translation
 		),
 	),
+	'password' => array(
+		'invalid' => 'The password is invalid.',	// TODO - Translation
+	),
 	'tos' => array(
 		'feedback' => array(
 			'invalid' => 'You must accept the Terms of Service to be able to register.',	// TODO - Translation
 		),
 	),
+	'username' => array(
+		'invalid' => 'The username is invalid.',	// TODO - Translation
+		'taken' => 'The username %s is taken.',	// TODO - Translation
+	),
 );
diff --git a/app/i18n/kr/user.php b/app/i18n/kr/user.php
index 52197ad46..32614cc36 100644
--- a/app/i18n/kr/user.php
+++ b/app/i18n/kr/user.php
@@ -29,9 +29,16 @@ return array(
 			'welcome' => 'Welcome %s,',	// TODO - Translation
 		),
 	),
+	'password' => array(
+		'invalid' => 'The password is invalid.',	// TODO - Translation
+	),
 	'tos' => array(
 		'feedback' => array(
 			'invalid' => 'You must accept the Terms of Service to be able to register.',	// TODO - Translation
 		),
 	),
+	'username' => array(
+		'invalid' => 'The username is invalid.',	// TODO - Translation
+		'taken' => 'The username %s is taken.',	// TODO - Translation
+	),
 );
diff --git a/app/i18n/nl/gen.php b/app/i18n/nl/gen.php
index 6f8d7a78e..296caee6f 100644
--- a/app/i18n/nl/gen.php
+++ b/app/i18n/nl/gen.php
@@ -43,7 +43,7 @@ return array(
 		'reset' => 'Authenticatie reset',
 		'username' => array(
 			'admin' => 'Beheerdersgebruikersnaam',
-			'format' => '<small>maximaal 16 alfanumerieke tekens</small>',
+			'format' => '<small>Maximaal 16 alfanumerieke tekens</small>',
 			'_' => 'Gebruikersnaam',
 		),
 	),
diff --git a/app/i18n/nl/user.php b/app/i18n/nl/user.php
index 67615694e..f8982e778 100644
--- a/app/i18n/nl/user.php
+++ b/app/i18n/nl/user.php
@@ -29,9 +29,16 @@ return array(
 			'welcome' => 'Welkom %s,',
 		),
 	),
+	'password' => array(
+		'invalid' => 'The password is invalid.',	// TODO - Translation
+	),
 	'tos' => array(
 		'feedback' => array(
 			'invalid' => 'De gebruiksvoorwaarden moeten worden geaccepteerd om te kunnen registeren.',
 		),
 	),
+	'username' => array(
+		'invalid' => 'The username is invalid.',	// TODO - Translation
+		'taken' => 'The username %s is taken.',	// TODO - Translation
+	),
 );
diff --git a/app/i18n/oc/gen.php b/app/i18n/oc/gen.php
index 8d91824fe..9726291cc 100644
--- a/app/i18n/oc/gen.php
+++ b/app/i18n/oc/gen.php
@@ -43,7 +43,7 @@ return array(
 		'reset' => 'Reïnicializacion de l’autentificacion',
 		'username' => array(
 			'admin' => 'Nom d’utilizaire administrator',
-			'format' => '<small>16 caractèrs alfanumerics maximum)</small>',
+			'format' => '<small>16 caractèrs alfanumerics maximum</small>',
 			'_' => 'Nom d’utilizaire',
 		),
 	),
diff --git a/app/i18n/oc/user.php b/app/i18n/oc/user.php
index dbab5b898..9a68c46f6 100644
--- a/app/i18n/oc/user.php
+++ b/app/i18n/oc/user.php
@@ -29,9 +29,16 @@ return array(
 			'welcome' => 'La benvenguda %s,',
 		),
 	),
+	'password' => array(
+		'invalid' => 'The password is invalid.',	// TODO - Translation
+	),
 	'tos' => array(
 		'feedback' => array(
 			'invalid' => 'Vos cal acceptar las condicions d’utilizacion per poder vos inscriure.',
 		),
 	),
+	'username' => array(
+		'invalid' => 'The username is invalid.',	// TODO - Translation
+		'taken' => 'The username %s is taken.',	// TODO - Translation
+	),
 );
diff --git a/app/i18n/pt-br/gen.php b/app/i18n/pt-br/gen.php
index e061cbb71..757f3a4e5 100644
--- a/app/i18n/pt-br/gen.php
+++ b/app/i18n/pt-br/gen.php
@@ -43,7 +43,7 @@ return array(
 		'reset' => 'Reset autenticação',
 		'username' => array(
 			'admin' => 'Usuário administrador',
-			'format' => '<small>máximo 16 caracteres alphanumericos</small>',
+			'format' => '<small>Máximo 16 caracteres alphanumericos</small>',
 			'_' => 'Usuário',
 		),
 	),
diff --git a/app/i18n/pt-br/user.php b/app/i18n/pt-br/user.php
index 52197ad46..32614cc36 100644
--- a/app/i18n/pt-br/user.php
+++ b/app/i18n/pt-br/user.php
@@ -29,9 +29,16 @@ return array(
 			'welcome' => 'Welcome %s,',	// TODO - Translation
 		),
 	),
+	'password' => array(
+		'invalid' => 'The password is invalid.',	// TODO - Translation
+	),
 	'tos' => array(
 		'feedback' => array(
 			'invalid' => 'You must accept the Terms of Service to be able to register.',	// TODO - Translation
 		),
 	),
+	'username' => array(
+		'invalid' => 'The username is invalid.',	// TODO - Translation
+		'taken' => 'The username %s is taken.',	// TODO - Translation
+	),
 );
diff --git a/app/i18n/ru/gen.php b/app/i18n/ru/gen.php
index 2dfe883dc..c910dea2d 100644
--- a/app/i18n/ru/gen.php
+++ b/app/i18n/ru/gen.php
@@ -43,7 +43,7 @@ return array(
 		'reset' => 'Authentication reset',	// TODO - Translation
 		'username' => array(
 			'admin' => 'Administrator username',	// TODO - Translation
-			'format' => '<small>maximum 16 alphanumeric characters</small>',	// TODO - Translation
+			'format' => '<small>Maximum 16 alphanumeric characters</small>',	// TODO - Translation
 			'_' => 'Username',	// TODO - Translation
 		),
 	),
diff --git a/app/i18n/ru/user.php b/app/i18n/ru/user.php
index 52197ad46..32614cc36 100644
--- a/app/i18n/ru/user.php
+++ b/app/i18n/ru/user.php
@@ -29,9 +29,16 @@ return array(
 			'welcome' => 'Welcome %s,',	// TODO - Translation
 		),
 	),
+	'password' => array(
+		'invalid' => 'The password is invalid.',	// TODO - Translation
+	),
 	'tos' => array(
 		'feedback' => array(
 			'invalid' => 'You must accept the Terms of Service to be able to register.',	// TODO - Translation
 		),
 	),
+	'username' => array(
+		'invalid' => 'The username is invalid.',	// TODO - Translation
+		'taken' => 'The username %s is taken.',	// TODO - Translation
+	),
 );
diff --git a/app/i18n/sk/gen.php b/app/i18n/sk/gen.php
index e6daea8a9..1e32b5096 100644
--- a/app/i18n/sk/gen.php
+++ b/app/i18n/sk/gen.php
@@ -43,7 +43,7 @@ return array(
 		'reset' => 'Reset prihlásenia',
 		'username' => array(
 			'admin' => 'Administrátorské používateľské meno',
-			'format' => '<small>maximálne 16 alfanumerických znakov</small>',
+			'format' => '<small>Maximálne 16 alfanumerických znakov</small>',
 			'_' => 'Používateľské meno',
 		),
 	),
diff --git a/app/i18n/sk/user.php b/app/i18n/sk/user.php
index 52197ad46..32614cc36 100644
--- a/app/i18n/sk/user.php
+++ b/app/i18n/sk/user.php
@@ -29,9 +29,16 @@ return array(
 			'welcome' => 'Welcome %s,',	// TODO - Translation
 		),
 	),
+	'password' => array(
+		'invalid' => 'The password is invalid.',	// TODO - Translation
+	),
 	'tos' => array(
 		'feedback' => array(
 			'invalid' => 'You must accept the Terms of Service to be able to register.',	// TODO - Translation
 		),
 	),
+	'username' => array(
+		'invalid' => 'The username is invalid.',	// TODO - Translation
+		'taken' => 'The username %s is taken.',	// TODO - Translation
+	),
 );
diff --git a/app/i18n/tr/gen.php b/app/i18n/tr/gen.php
index e22bf9961..af41b3df1 100644
--- a/app/i18n/tr/gen.php
+++ b/app/i18n/tr/gen.php
@@ -43,7 +43,7 @@ return array(
 		'reset' => 'Kimlik doğrulama sıfırla',
 		'username' => array(
 			'admin' => 'Yönetici kullanıcı adı',
-			'format' => '<small>en fazla 16 alfanümerik karakter</small>',
+			'format' => '<small>En fazla 16 alfanümerik karakter</small>',
 			'_' => 'Kullancı adı',
 		),
 	),
diff --git a/app/i18n/tr/user.php b/app/i18n/tr/user.php
index 52197ad46..32614cc36 100644
--- a/app/i18n/tr/user.php
+++ b/app/i18n/tr/user.php
@@ -29,9 +29,16 @@ return array(
 			'welcome' => 'Welcome %s,',	// TODO - Translation
 		),
 	),
+	'password' => array(
+		'invalid' => 'The password is invalid.',	// TODO - Translation
+	),
 	'tos' => array(
 		'feedback' => array(
 			'invalid' => 'You must accept the Terms of Service to be able to register.',	// TODO - Translation
 		),
 	),
+	'username' => array(
+		'invalid' => 'The username is invalid.',	// TODO - Translation
+		'taken' => 'The username %s is taken.',	// TODO - Translation
+	),
 );
diff --git a/app/i18n/zh-cn/user.php b/app/i18n/zh-cn/user.php
index 0f3c0a2de..552188c88 100644
--- a/app/i18n/zh-cn/user.php
+++ b/app/i18n/zh-cn/user.php
@@ -29,9 +29,16 @@ return array(
 			'welcome' => '欢迎来到 %s,',
 		),
 	),
+	'password' => array(
+		'invalid' => 'The password is invalid.',	// TODO - Translation
+	),
 	'tos' => array(
 		'feedback' => array(
 			'invalid' => '您必须接受服务条款才能注册',
 		),
 	),
+	'username' => array(
+		'invalid' => 'The username is invalid.',	// TODO - Translation
+		'taken' => 'The username %s is taken.',	// TODO - Translation
+	),
 );