Feature migrations up/down (#270)

* Migrations up down

* Add forum model

* Syntactic sugar for db structure changes

* Refactor migrations with $up & $down

* Fix migrations upgrade and downgrade

+ Add option to disable auto migrate

* Add migrate:to command

Usage: php aac migrate:to x (x - database version)

* Show error when mail is not enabled

* Fixes regarding to init.php

* Add migrate command to manually upgrade db, incase auto migrate is disabled

* Fixed rest of the migrations

* Limit max version of database

* Don't allow minus number

* Option to clear specified plugin settings by name

* Version is required

* Fix PHPStan errors

* Unset $up after migration, to prevent executing same migration twice

* Add database version to output

* This is not needed

* Update 5.php

* Set database_auto_migrate on install

* Set blank & color only if current db version supports it

* Fix duplicate function declaration

system/init.php

@@ -17,6 +17,7 @@ use MyAAC\Settings;
 
 defined('MYAAC') or die('Direct access not allowed!');
 
+global $config;
 if(!isset($config['installed']) || !$config['installed']) {
 	throw new RuntimeException('MyAAC has not been installed yet or there was error during installation. Please install again.');
 }
@@ -142,7 +143,10 @@ if(!defined('MYAAC_INSTALL') && !$db->hasTable('myaac_account_actions')) {
 }
 
 // execute migrations
-require SYSTEM . 'migrate.php';
+$configDatabaseAutoMigrate = config('database_auto_migrate');
+if (!isset($configDatabaseAutoMigrate) || $configDatabaseAutoMigrate) {
+	require SYSTEM . 'migrate.php';
+}
 
 // settings
 $settings = Settings::getInstance();