Introduce Reggie for regex routing
Update v2 API to use regex based routing

- [Issue #122] Use route defaults instead of updates/<group>/all
- Make group based routing bit more stricter (update/remove)
- Add API 404 error handling
- Update tests
Fix API 404 handling
Update error messages
Update error page
Add secondary nav styling. Removing top margin for container.
Update bugs page
Cleanup
Fix security contact email