Drop obsolete interface names from MetaModel::is*Attribute() methods
Change tab to space indention in tests.
Fix code style in unit tests.
Add missing phpDoc in unit tests.
Cache parent render setting in RenderSetting\DrawSetting.
Refactoring of MetaModels\Factory MetaModels\Attribute\Factory.
Switch to c-c-a code style and activate all build tasks.
Merge branch 'refactoring/factories' into tng.