[FEATURE] Adds User Authentication module.
[TWEAK] Makes login prettier
[FEATURE] Restricts user to their own transactions
[FEATURE] Changes total expenses and total income to be User methods. Also makes sign up prettier.
[TWEAK] Removes Navbar login button
[TWEAK] Fixes profile dropdown
[TWEAK] Changes edit and delete links on transactions index page
[BUG] Random Bug Fixes
[BUG] Fixes Search and adds code climate integration
Merge pull request #1 from lennonc/authentication

Authentication