Added actionMailer support to automatically email admin users when comments are added, edited, or delted
Added Usage Stats to admin page
Added controls to toggle user Admin status to Admin page.
Corrected times on Usage Stats to better match wording.
Precompiled assets and put the config.force_ssl to true in production.rb.  Removed the force ssl in the application controller.
Merge branch 'actionMailerUsageStats' of github.com:LGordon2/code-challenge-grading

Conflicts:
	app/models/user.rb