Added new field to model, changed some layouts
Merge branch 'master' of https://github.com/acm-uiuc/tatt
Fixed layout, added new field
Merge pull request #67 from billliu1992/master

Added a field, changed some layouts
Added list of available items, button to make item available

Also altered items page to show whether or not item is available to checkout
Merge pull request #69 from billliu1992/master

Added page for available items, added ability to make items available, modified table