Merge pull request #57 from susieye19/master

Add info to homepage redesign
Add Zopim chat widget
Merge branch 'master' of github.com:alexyang21/learnrails
Fix typo in Source Code
Merge pull request #58 from susieye19/master

Fix question padding
Split application layout into two files so zopim appears for new students only
Merge pull request #59 from susieye19/master

Change homepage message
Add Fatwallet and F6S coupons
Remove multiple application layouts
Configure zopim
Reconfigure Zopim to allow chatting with existing students
Remove button.show
Re-add button.show code for zopim
Zopim flip order of show and setHideWhenOffline
Add 0 coupon for New England Tech
Remove zopim widget
Remove zopim completely
Use Coffeescript to check coupons, fix admin authentication, fix coupon resubmission problem
Add placeholder migration file
Temporarily remove new coupon migration