ADD USER LOGIN AND SIGN UP

Added some initial implementations for the user login and sign up actions through their respective routes.
Merge pull request #3 from Gunga/danny

Danny
Merge pull request #4 from Gunga/styling

ADD USER LOGIN AND SIGN UP
FIX MERGE VARIABLE DIFFERENCES

We had defined username as user_name as it had been agreed upon. However, the actual column was renamed to username. This commit fixes that change. It also adds a logout.
Merge pull request #5 from Gunga/styling

FIX MERGE VARIABLE DIFFERENCES
ADD DIGESTER TO SEEDS
Merge pull request #6 from Gunga/styling

ADD DIGESTER TO SEEDS
profile page and css changes