Eradicated userIds from Frontend

I only modified the User class, Transaction may still need some work.
Merge branch 'master' into WillsBranch
Merge branch 'Huys_Branch'
Made User Class Nice and Pretty
Merge branch 'WillsBranch'
Merge branch 'master' of https://github.com/milneti/PayBack
Merge branch 'master' into Huys_Branch

Conflicts:
	PayBack/src/com/example/payback/User.java