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
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