Fix for Facet editor

The ProjectSdksModel is now chosen using a null-project which is
apparently sufficient.  ALso if the selected SDK is null, the
DefracFacetEditorTab won't run into an NPE.
Fix for Macro and Delegate annotations

- Unspecific annotation in specific module is no longer requiring
  invalid implementations
- Delegate constructors checked correct
- Don't skip Javac as long as IntelliJ doesn't want to build project