Create Database Schemas for Users and TAs
Added main , admin and ta pages. TA profile is in progress.
Updated README.md
Merge branch 'master' of https://github.com/andreykul/learningcentre into issue-4

Conflicts:
	README.md
Small fix to READEME.md
Updated profile and login page
Fully working TA profile page
Fixed problem with not uploading a picture
Added sanatization for input, we do not store html tags
Modifed the header to display active page
Added JqueryUI for later usage
Added a settings table for global settings made by admin
Moved logic from TA controller to separate controllers
Renamed Schedule to Availabilty to match controller
Added a column to Availability table, Separated Seeders into separate files
Added Availability settingscontrols for admin
Changed migrations and added some seeds
Added just viewing of TA availability
Added Availabiltiy selection for TA. Added Ctrl+Z functionality to undo changes
Changed 'preffered' to 'prefered'