Zurb gem is missing foundation.js

The zurb foundation gem seems to be missing the required foundation.js
file. This causes a problem with heroku and any local asset
precompilation.

TODO: Send PR to zurb when you get a chance.
remove foundation require
Foundation requires you remove @import line
lock zurb foundation version
Lock Zurb verison and precompile assets
Products path checks for admin and asset clean up
Added admin check before the products post route. Refactored admin check
to live in application controller.

Fixed assets which had an improper compile flag set.
Add JSON support, refactor email, and add amazon links