Update and add to documentation (#3348)

* remove outdated mailing list information

* add information about normal view

* add information about global and reader view

* fix import section header

* reorder documentation to reflect menu's order

* clarify setting as default in normal view

* add info about reading section for config

* fix heading levels, add info about archive + profile sections

* unfix heading levels

* move section on feed-specific settings to the subscription management page

* update information about adding feeds, add information about feed management

* fix link to security page in installation

* fix broken links

* fix broken link to install page

* add lighttpd from project readme

* add php modules to step 4, add horizontal line to better separate steps from footnotes visually

* fix broken link

* add index page for easier access of other pages

* move first steps document

* make dedicated bug reporting page

* make index page for linking to other pages

* moved fever API to relevant location, linked to index

* remove outdated mailing list information

* add information about normal view

* add information about global and reader view

* fix import section header

* reorder documentation to reflect menu's order

* clarify setting as default in normal view

* add info about reading section for config

* fix heading levels, add info about archive + profile sections

* unfix heading levels

* move section on feed-specific settings to the subscription management page

* update information about adding feeds, add information about feed management

* fix link to security page in installation

* fix broken links

* fix broken link to install page

* add lighttpd from project readme

* add php modules to step 4, add horizontal line to better separate steps from footnotes visually

* fix broken link

* add index page for easier access of other pages

* move first steps document

* make dedicated bug reporting page

* make index page for linking to other pages

* moved fever API to relevant location, linked to index

* re-fix link

* remove mention of defunct mailing list

* grammar fix

* replace stream with feed

* add optional items, replace stream with feed

* replace stream with feed

* fix word choice

Co-authored-by: Frans de Jonge <fransdejonge@gmail.com>

* fix word choice

better reflect age of project

Co-authored-by: Frans de Jonge <fransdejonge@gmail.com>

* grammar fixes

Co-authored-by: Frans de Jonge <fransdejonge@gmail.com>

* remove double headings

Co-authored-by: Frans de Jonge <fransdejonge@gmail.com>

* change single quote to double quote for consistency

* add subreddit link

* change php module list to Dockerfile link

* fix link to developer index, change html links to md for consistency

* update css selector terms

Co-authored-by: Frans de Jonge <fransdejonge@gmail.com>

Co-authored-by: Frans de Jonge <fransdejonge@gmail.com>

3 files changed, 5 insertions, 3 deletions

diff --git a/docs/en/admins/02_Prerequisites.md b/docs/en/admins/02_Prerequisites.md
index 196edad63..7828972dd 100644
--- a/docs/en/admins/02_Prerequisites.md
+++ b/docs/en/admins/02_Prerequisites.md
@@ -6,7 +6,7 @@ You need to verify that your server can run FreshRSS before installing it. If yo
 
 | Software      | Recommended             | Also Works With         |
 | ------------- | ----------------------- | ----------------------- |
-| Web server    | **Apache 2**            | Nginx                   |
+| Web server    | **Apache 2**            | Nginx, lighttpd         |
 | PHP           | **PHP 7+**              | PHP 5.6+                |
 | PHP modules   | Required: libxml, cURL, JSON, PDO\_MySQL, PCRE and ctype. <br>Required (32-bit only): GMP <br> Recommanded: Zlib, mbstring, iconv, ZipArchive <br> *For the whole modules list see [Dockerfile](https://github.com/FreshRSS/FreshRSS/blob/master/Docker/Dockerfile-Alpine#L7-L9)* | |
 | Database      | **MySQL 5.5.3+**        | SQLite 3.7.4+, PostgreSQL 9.5+          |
diff --git a/docs/en/admins/03_Installation.md b/docs/en/admins/03_Installation.md
index 5efd0871f..6cbbae6ad 100644
--- a/docs/en/admins/03_Installation.md
+++ b/docs/en/admins/03_Installation.md
@@ -10,7 +10,7 @@ Before you begin, make sure that you've read the [prerequisites](02_Prerequisite
 
 3. Give ownership of the FreshRSS folder to your web server user (often `www-data`). Give group read permissions to all files in `.`[^2], and group write permissions to `./data/`.
 
-4. Install needed PHP modules.
+4. Install needed PHP modules. A precise and up-to-date list can be found in [the Dockerfile](https://github.com/FreshRSS/FreshRSS/blob/master/Docker/Dockerfile#L11-L12). 
 
 5. Create a database for FreshRSS to use. Note the username and password for this database, as it will be needed during installation!
 
@@ -18,6 +18,8 @@ Before you begin, make sure that you've read the [prerequisites](02_Prerequisite
 
 7. You can then customize [the configuration of your instance](https://github.com/FreshRSS/FreshRSS/blob/master/config.default.php#L3-L4), [the default configuration for new users](https://github.com/FreshRSS/FreshRSS/blob/master/config-user.default.php#L3-L5) or [the default set of feeds for new users](https://github.com/FreshRSS/FreshRSS/blob/master/opml.default.xml#L2-L5).
 
+---
+
 [^1]: Make sure to expose only the `./p/` folder to the Web, as the other directories contain personal and sensitive data.
 
 [^2]: If you wish to allow updates from the web interface, also give group write permissions to this folder.
diff --git a/docs/en/admins/05_Configuring_email_validation.md b/docs/en/admins/05_Configuring_email_validation.md
index fe073545c..0379e4c1a 100644
--- a/docs/en/admins/05_Configuring_email_validation.md
+++ b/docs/en/admins/05_Configuring_email_validation.md
@@ -27,7 +27,7 @@ To configure a SMTP server, you'll have to modify the `data/config.php` file.
 First, change the `mailer` item to `smtp` (instead of the default `mail`).
 
 Then, you should change the `smtp` options like you would do with a regular
-email client. You can find the full list of options in the [`config.default.php` file](/config.default.php).
+email client. You can find the full list of options in the [`config.default.php` file](https://github.com/FreshRSS/FreshRSS/blob/master/config.default.php).
 If you're not sure to what each item is corresponding, you may find useful [the
 PHPMailer documentation](http://phpmailer.github.io/PHPMailer/classes/PHPMailer.PHPMailer.PHPMailer.html#properties)
 (which is used by FreshRSS under the hood).