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
pagination for submissions.
loading style & sidebar. change page size.
paginate announcement.
requires user to confirm their email before they can login.
fix error when creating new mcq.
fixed update user profile error page