Merge pull request #111 from ianderse/luke

Luke
add ability to create/edit/delete categories from admin dashboard
added contact form

WIP, need to add Pony integration
added sendgrid env variables

added env keys to heroku
merge conflicts
Merge pull request #119 from ianderse/jessica

contact form implementation
added price format
add ability to set active status of items, only active items are displayed on the public menu
add item active? display on admin item display dashboard
fix merge commits
use price helper on admin dashboard
can retire items spec
merge conflicts
spec: admin can retire items from being sold
can see retired items only as an admin
spec: can see retired items only as an admin
add masonry/imagesloaded javascript to create a nice grid layout that is fully responsive
fix a test
Merge pull request #121 from ianderse/jessica

admin testing
added upload image back in