Setup for User Profiles

- don't route anything to sessions_controller
- user login_controller instead
- set localstorage of user correctly
fix login/register with profiles
fixing some overall site rendering with auth. closes #18, closes #12
Merge branch 'master' into profiles-18-rb
displayName helper for templates. Show creator's name in idea
Fix voting duplication
add md5 lib and use gravatars for now. closes cremalab/suite_api#19. closes #5
Merge branch 'master' into profiles-18-rb
cleanup
idea thread stuff
Merge pull request #22 from cremalab/profiles-18-rb

Profiles UI