If you haven't done it already, update your database with the modified sql model!

- Fixed Admin checks (UserType)
- Added User edit page
- Modified advertisement edit to include IsSold
- Modified advertisement to include success message, slightly modified error messaging
- Fixed header when editing user
- Added cancel buttons on several pages, also fixed styling
- Being able to return to previous page from ad view
- Modified styling of edit pages to better incorporate messages
- Admin is now unable to delete himself
- Modified styling of advertisement pages.
- Modified styling of register and login pages.
- Added awesome navbar
- Added 'user info' for viewing contact information of bidders