user model tests added. removed duplicate line from user model
added line break to user login/signup page when there is an error for readbility
added comment_spec file to spec/models
added comments to seed file
added some model tests to ensure validation for lawrence and nirav
Merge pull request #13 from Flamdoodle/Users

Users
nice view of questions, q_comments, answers, and a_comments
Pulling in Stephen's tests.

Merge branch 'master' of https://github.com/Flamdoodle/stack_uberflow into nirav_lawrence