Merge profile branch to demo

Finished Task List:
- User profile page is now linked from the top bar "user name"

Near future improvement:
- Beautify the page
- Review fields that should be editable/not
use the url tag rather than hardcoding the URL. see: https://docs.djangoproject.com/en/dev/ref/templates/builtins/#url and https://github.com/attendanceproject/djattendance/blob/attendance-views/ap/templates/base.html#L83