calendar_systems 6.x-1.2-alpha1

* #727498: اشکال در درج روز و ساعت by sinasalek
* #721568: Code cleanup by sinasalek
* #721572: Following Drupal's coding standard by sinasalek
* #721574: Support Drupal's default date RFCs for implemented calendar systems. by sinasalek
* Separate admin permission for calendar system administration by hosseinashrafzadeh
* Compatibility with aggressive caching by sinasalek.
* Performance improvement, dependencies will be loaded only they're really needed by sinasalek
* Some documentation on settings page by sinasalek
* some inline documentation by sinasalek
* applied all Drupal coding standards by sinasalek
* An incompatibility with cmf module has been fixed by sinasalek
* Fixing an error message in back-end lib by sinasalek