Beautiful AR!

- cleaned controllers/accom (unlink, add)
- cleaned controllers/faculty (accom_dept/college)
- controllers/site
> added new session details (rank, position, program_ID)
> added error login message in site/index
- merged add_pub/awd/…/oth to add_accom in models/accom
- add get_college function in models/user
- working forms/ar/fragments/*