Merge pull request #14 from antonow/demographics

Demographics
completed feature
Merge pull request #15 from antonow/patrick-added-stats-and-progress

completed feature
added colors, added avg conviction, fixed filter to show all users
Merge pull request #16 from antonow/graph-colors-convictions

added colors, added avg conviction, fixed filter to show all users
reroutes to index if user is not logged in and trying to access /beliefs or add demographics
removing beliefs works, started implement search for adding beliefs
improved layout of all pages, finished basic search
minor cosmetic changes