use postgres to do password verification
(work in progress) lock down frontend db permissions

I'm moving everything the frontend does to a function so that we can prevent the frontend user from having any direct access to tables in the database
fix user creation
fix fake money
fix withdrawal
can cancel order
fix 2fa setup
reorder some stuff
fix bug preventing users from signing up if they sign up for the mailing list
PR fixes
use `select` instead of `select * from`
Merge pull request #29 from txbits/viktor/sqlfunctions

Viktor/sqlfunctions
Merge pull request #28 from txbits/viktor/mailinglist-bug

fix bug preventing users from signing up if they sign up for the mailing...
Remove transactions table and triggers