Module clean-up and new features:

- Added permissions.
- User can now edit her terms.
- You can assign/ remove a vocabualry from a group right inside the admin/taxonomy page.
- CRUD api
- Rules integration..
- Vocab overview is now a form, allowing easier form_alter().
- Breadcrumb and redirection is a little nicer.
- Move functions to include files.
- Clean-up comments