Fixed up AJAX post for subareas, areas, and new semesters

TODO: make ajax post formatting for time available
      create aggregate view that displays time availables for all
employees
      make subareas update based on areas selected (AJAX to the max)
      make individual employee availability's viewable upon request
(from admin?)
meh

database is broken...
Admin is working..
Adding submit function for views to be called on POST (submit button
clicked)
Restructured database for availability time
changed aggregate to overview
Added overview.html + view

TODO:
    figure out how to save to db
    figure out how to pull from db
fixed migrations issue

modified database structure, added Area class
Got employees to save from html page, still need to
work on areas, and times being saved. Some type of array issue...
GETTING CLOSER!!!

Need to commit more often, need to document code, need to refactor
everything.
POST to db working!

TODO: be able to use a GET request to retrieve from db
    make overview page fully functional
    tons of polishing
database is now working

overviews page correctly pulls from database.
TODO: implement color coding for names based on subjects
      refine and refactor
      move on to a new project
last commit for now

Ive finished my rudimentary goals with this project