* fixed recovering account and changing password when salt is enabled

* added 'enabled' field in myaac_hooks table, which can enable or
disable specified hook
* password change minimal/maximal length is now more precise

system/libs/pot/OTS_Account.php

@@ -470,11 +470,6 @@ class OTS_Account extends OTS_Row_DAO implements IteratorAggregate, Countable
     {
         $this->data['password'] = (string) $password;
     }
-
-    public function setSalt($salt)
-    {
-        $this->data['salt'] = (string) $salt;
-    }
 /**
  * E-mail address.
  *
@@ -1032,10 +1027,6 @@ class OTS_Account extends OTS_Row_DAO implements IteratorAggregate, Countable
                 $this->setPassword($value);
                 break;
 
-            case 'salt':
-                $this->setSalt($value);
-                break;
-
             case 'eMail':
                 $this->setEMail($value);
                 break;