PDO refactoring for code simplification (#2522)

* PDO refactor

* Automatic prefix when using the syntax `_tableName`
* Uniformity: MySQL is now PDO::ATTR_EMULATE_PREPARES = false just like SQLite and PostgreSQL, with consequences such as only one statement per query
* Use PDO methods exec(), query(), prepare() + execute() in a more efficient way
* Remove auto-update SQL code for versions older than FreshRSS 1.5 (3 years old)
* The name of the default category is set in PHP instead of in the DB (simplies SQL and allows changing the name according to the FreshRSS language)
* Rename `->bd` to `->pdo` (less of a frenshism, and more informative)
* Fix some requests, which were not compatible with MySQL prepared statements

* Whitespace

* Fix syntax for PostgreSQL sequences

+ MySQL install

* Minor formatting

* Fix lastInsertId for PostgreSQL

* Use PHP 5.6+ const

Take advantage of https://github.com/FreshRSS/FreshRSS/pull/2527
https://www.php.net/manual/en/migration56.new-features.php

* A bit of forgotten PHP 5.6 simplification for cURL

* Forgotten $s

* Mini fix custom user config

https://github.com/FreshRSS/FreshRSS/pull/2490/files#r326290346

* More work on install.php but not finished

* install.php working

* More cleaning of PDO in install

* Even more simplification

Take advantage of PDO->exec() to run multiple statements

* Disallow changing the name of the default category

https://github.com/FreshRSS/FreshRSS/pull/2522#discussion_r326967724

1 files changed, 4 insertions, 1 deletions

diff --git a/app/views/helpers/category/update.phtml b/app/views/helpers/category/update.phtml
index a2ee3e2ef..b64bd786a 100644
--- a/app/views/helpers/category/update.phtml
+++ b/app/views/helpers/category/update.phtml
@@ -11,7 +11,10 @@
 		<div class="form-group">
 			<label class="group-name" for="name"><?php echo _t('sub.category.title'); ?></label>
 			<div class="group-controls">
-				<input type="text" name="name" id="name" class="extend" value="<?php echo $this->category->name() ; ?>" />
+				<input type="text" name="name" id="name" class="extend" value="<?php echo $this->category->name() ; ?>" <?php
+					//Disallow changing the name of the default category
+					echo $this->category->id() == FreshRSS_CategoryDAO::DEFAULTCATEGORYID ? 'disabled="disabled"' : '';
+				?> />
 			</div>
 		</div>