enable levelup notification popup.
add pagination for missions and trainings list.
Merge branch 'master' of github.com:Coursemology/coursemology.org

* 'master' of github.com:Coursemology/coursemology.org:
  fixed admin panel bug
  commented out invalid testing code
  added landing page
  added rspec testing framework
  added admin panel, refactored user account management

Conflicts:
	Gemfile
	Gemfile.lock