Remove Settings::update method

It was too slow

src/mibew/libs/classes/Mibew/Controller/CronController.php

@@ -66,7 +66,6 @@ class CronController extends AbstractController
 
         // Update time of last cron run
         Settings::set('_last_cron_run', time());
-        Settings::update();
 
         if (!$quiet) {
             // TODO: May be localize it

src/mibew/libs/classes/Mibew/Controller/Settings/CommonController.php

@@ -210,7 +210,6 @@ class CommonController extends AbstractController
         foreach ($params as $key => $value) {
             Settings::set($key, $value);
         }
-        Settings::update();
 
         // Update styles params
         ChatStyle::setDefaultStyle($chat_style);

src/mibew/libs/classes/Mibew/Controller/Settings/FeaturesController.php

@@ -45,7 +45,6 @@ class FeaturesController extends AbstractController
 
         if (Settings::get('featuresversion') != FEATURES_VERSION) {
             Settings::set('featuresversion', FEATURES_VERSION);
-            Settings::update();
         }
 
         // Load all needed options and fill form with them.
@@ -84,7 +83,6 @@ class FeaturesController extends AbstractController
             $value = $request->request->get($opt) == 'on' ? '1' : '0';
             Settings::set($opt, $value);
         }
-        Settings::update();
 
         // Redirect the current operator to the same page using GET method.
         $redirect_to = $this->generateUrl(

src/mibew/libs/classes/Mibew/Controller/Settings/PerformanceController.php

@@ -180,7 +180,6 @@ class PerformanceController extends AbstractController
         foreach ($params as $key => $value) {
             Settings::set($key, $value);
         }
-        Settings::update();
 
         // Redirect the current operator to the same page using get method.
         $redirect_to = $this->generateUrl('settings_performance', array('stored' => true));

src/mibew/libs/classes/Mibew/Settings.php

@@ -158,27 +158,21 @@ class Settings
     public static function set($name, $value)
     {
         $instance = self::getInstance();
+        // Update value in the instance
         $instance->settings[$name] = $value;
-    }
 
-    /**
+        // Update value in the database
-     * Updates settings in database.
-     */
-    public static function update()
-    {
-        $instance = self::getInstance();
         $db = Database::getInstance();
-        foreach ($instance->settings as $key => $value) {
+        if (!isset($instance->settingsInDb[$name])) {
-            if (!isset($instance->settingsInDb[$key])) {
-                $db->query(
-                    "INSERT INTO {config} (vckey) VALUES (?)",
-                    array($key)
-                );
-                $instance->settingsInDb[$key] = true;
-            }
             $db->query(
-                "UPDATE {config} SET vcvalue=? WHERE vckey=?",
+                "INSERT INTO {config} (vckey, vcvalue) VALUES (:name, :value)",
-                array($value, $key)
+                array(':name' => $name, ':value' => $value)
+            );
+            $instance->settingsInDb[$name] = true;
+        } else {
+            $db->query(
+                'UPDATE {config} SET vcvalue=:value WHERE vckey=:name',
+                array(':name' => $name, ':value' => $value)
             );
         }
     }

src/mibew/libs/classes/Mibew/Style/ChatStyle.php

@@ -117,7 +117,6 @@ class ChatStyle extends AbstractHandlebarsPoweredStyle implements StyleInterface
     public static function setDefaultStyle($style_name)
     {
         Settings::set('chat_style', $style_name);
-        Settings::update();
     }
 
     /**

src/mibew/libs/classes/Mibew/Style/InvitationStyle.php

@@ -82,7 +82,6 @@ class InvitationStyle extends AbstractStyle implements StyleInterface
     public static function setDefaultStyle($style_name)
     {
         Settings::set('invitation_style', $style_name);
-        Settings::update();
     }
 
     /**

src/mibew/libs/classes/Mibew/Style/PageStyle.php

@@ -95,7 +95,6 @@ class PageStyle extends AbstractHandlebarsPoweredStyle implements StyleInterface
     public static function setDefaultStyle($style_name)
     {
         Settings::set('page_style', $style_name);
-        Settings::update();
     }
 
     /**