Merge branch 'master' into Anthony's_Work
Merge branch 'master' into Anthony's_Work
Made changes that Amit asked us to.

- Admin can remove semesters and has to input seelio key for making a
new semester.
- Javascript now verifies that the year is 20XX.
- Moved code from Layout into Semester.html
- Changed title from Expo Spring 2014 to Georgia Tech Expo.
- Added a form of redirection so that people can access past semesters
data.
resolved merge conflict in redisDB.py