Fixed: Backslash must be escaped in PhpMyAdmin configuration file (control user password)
Fixed: Error messages from database updates are not detailled
Fixed: Infinite loop in iMSCP_Update_Database::dropIndexByColumn()
Fixed: Undefined key KEY_NAME in iMSCP_Update_Database::dropIndexByColumn()
Fixed: Unable to migrate from ispCP (linked to the infinite loop in iMSCP_Update_Database::dropIndexByColumn())
Fixed: Undefined offset in database update r169
Small fixes