feat(office): update many many things, 1 day of work in 1 commit: oh yeah.

**STYLE**
- Remove unused CSS files
- Reorganize SCSS files to only import _vars once (DRY I love you)
- Add fontawesome
- Create custom checkboxes
**FEATURE**
- Add open/close panel feature
**FACTORIES**
- Remove unused factories
- Update task factory for update action (PUT)