PersianTextHelper Fix & Update.

1-Fix ConvertToPersianDigit method
2-Update comments
Set scaffolding attributes for PaginatedCriteria.
Upgrade Xoqal generator.

- Removed unused file generators.
- Make Repository and Service classes public (to be accessible to the
composition root).
Xoqal.Security: Upgraded permission container.

Now we use const field as permission items so that we can use them in
attributes.
Made UnityControllerFactory more extensible.
Cleaning
Updated assembly versions.
Merge branch 'master' of https://github.com/SoheilJafari/Xoqal
Commenting
Fix AdvancedDbContext and AdvancedObjectContext.

Fix AdvancedDbContext and AdvancedObjectContext when we don't use
ICreateUser and IUpdateUser
Merge pull request #4 from SoheilJafari/master

Fixed AdvancedDbContext and AdvancedObjectContext to work when security context is not available and entities didn't implement ICreateUser and ILastUpdateUser.
Added StringExtensions.RemoveIfEndsWith method.
Merge branch 'master' of https://github.com/AmirKarimi/Xoqal