Feat
- Add "local" flavor for providing the flavor in the project
- Add support for theme "flavors"
Refactor
- **projects.py,theme.py**: Decouple announcement strings from projects.py
- **projects.py**: Don't read projects.yaml again for release announcement
- **projects.py**: replace uses of _load_mapping with _create_mapping
- **projects.py**: Make Project creation more explicit