Documentation improvements

~dev_rating/application/classes/Model/Account.php

@@ -63,19 +63,28 @@ class Model_Account extends Model
             ->execute()[0];
     }
 
-
+    /**
+     * @param $accountID
+     * @param $newPassword
+     * @return bool true, if password was changed
+     */
     public static function changePassword($accountID, $newPassword) {
         $sql = 'SELECT `ChangeAccountData`(:account, :value, "password") AS Num';
-        return DB::query(Database::SELECT, $sql)
+        return (bool) DB::query(Database::SELECT, $sql)
             ->parameters([
                 ':account' => $accountID,
                 ':value'   => $newPassword,
             ])->execute()->get('Num');
     }
 
+    /**
+     * @param $accountID
+     * @param $newLogin
+     * @return bool true, if login was changed
+     */
     public static function changeLogin($accountID, $newLogin) {
         $sql = 'SELECT `ChangeAccountData`(:account, :value, "login") AS Num';
-        return DB::query(Database::SELECT, $sql)
+        return (bool) DB::query(Database::SELECT, $sql)
             ->parameters([
                 ':account' => $accountID,
                 ':value'   => $newLogin,