Merge pull request #135 from tochman/fixes

Fixes
pong to bryan: first scenario for custom error 404. Not passing yet
fixed back button in documents/new page, removed rogue 'show me the page' step in project.features
updated sidebar to toggle caret direction between down and right
precompiled assets
forgot to add precompiled assets, added display_profile to user schema, updated users controller and edit registrations template
fixed bug in cuc, all tests GREEN
added ul, li and target to html whitelist in documents_helper.rb
pong to bryan: users_controller.rb code not working
added pending step in users_controller_spec.rb, fixed the show page, added cuc scenario, all tests GREEN
fixed undefined steps in user_management.feature
Merge pull request #138 from yggie/profile-privacy

Profile privacy feature
added notifications to .travis.yml
Update .travis.yml
some additions to about us
Merge pull request #141 from tansaku/develop

some additions to about us
pong to thomas: initiated work on 404 custom error. cucumber not passing so far
pong to Bryan: 404 is working and tested with cukes
added error handling in application controller, cuke test for customerrors.feature GREEN, rspec REDS
updated cukes in customerror.feature and added content for title in application layout, cleaned up some left over testing code in controllers