Added basic validation and tests to users table
Merge pull request #1 from MikeyGuru/master

update 1
Cleaned up user and note table; added problem to notes
Added user table validations and tests
Added basic users controller methods and tests
Cleaned up user_id to be current_user_id under session
Built logins controller and tests; added methods to application controller
Added menu bar; added new user and login forms
Added basic mailer for account activation
Cleaned up text
Redirect to login show prompt after new user
Cleaned up to redirect to login show for account activation
Added custom stylesheet
Removed unnecessary css
Fixed link in test
Added some test and ability to make notes on problems