Fixed bug on the registration page.
Merge branch 'master' of https://github.com/rojasosc/TARS
updated db to fit code

modified Students and Positions tables
Added a check to the sign up page for existing email address.
Merge branch 'master' of https://github.com/rojasosc/TARS
Removed the alert message from the sign up page and replaced it with asynchronous notification.
Small modification to the email verification.
Merge branch 'master' into stage

Conflicts:
	TARS.sql
	signup.js
Merge branch 'stage' of https://github.com/rojasosc/TARS into stage