validateUniques() is now default for save procedures

This is actually needed if you're, for instance, using EloquentUserProvider.

src/Ardent/Ardent.php

@@ -624,7 +624,7 @@ protected function internalSave(array $rules = array(),
             self::saved($afterSave);
         }
 
-        $valid = $this->validate($rules, $customMessages);
+        $valid = $this->validateUniques($rules, $customMessages);
 
         if ($force || $valid) {
             return $this->performSave($options);