Several minor updates

- Added enable table to DB to enable/disable student project creation
- Removed potential adviser tables
- Added agreement tables to allow creation of pages users must agree to
before undertaking an action
- Added contact company and motivation fields to ind proj and project,
respectively
- Updated deadline page, now fully works
- Fixed industry project deletion bug
- Some minor spelling changes
- Minor population script changes
- Updated project pages to include new industry field
- Updated student project creation to contain new adviser email
- Updated industry creation to include company field