Show User dashboard as home page.
Add OmniAuth's developer strategy for testing.
Fix ability.rb
Apply CanCan to resources.
Fix disappearing editor.
Fix disappearing editor.
Fix Post controller bugs

- CanCan doesn't work with strong_parameters
- Wrong redirect URL
Fix CanCan authorization for Posts.
Merge branch 'master' into authorization
Finish Post authorization.
Add authenticated user home page. Maybe replaced with newsfeed.

Also some changes in other pages.
UI changes.
Add Project Browsing page.

at `/projects`
Merge pull request #18 from pnguyen1097/authorization

Authorization