Bug fixes

Critical error fixes.

Hot fix for admin UI regression with nested grids due to previous CSS changes.

GridStack 8.x-2.0-dev, 2019-03-18
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- Fixed for admin UI regression with nested grids due to previous CSS changes.
- Updated grid loops to use theme_gridstack_box().
- Changed few entity static methods to non-static ones.
- Moved internal entity methods to GridStack.
- Made GridStack entity extensible by Outlayer.

• New charts for users and files stats
• Overall, year and month ranking node creators
• My ranking overall, year and month node creator

Fixed reported issues, applied patches:

• Settings name change to module name
• Update code to follow the coding standards
• Remove unused use statements

Thanks to scuba_fly for the bug reports and patches provided.

Fixed missing entity_type_id information from configuration.

Fixed missing entity_type_id information from configuration.