seller item and location list
merged and resolved conflicts
Fixed some visual bugs in Seller UI
Refactored seller UI code and added additional frameworks.
Completed UI skeleton for add location modal

This required the addition of a few different libraries
(angular-bootstrap and angular-strap) for the date and time widgets.
Make sure to run bower --install when you pull this!
Added validation for required fields.
Hooked up location creation to server.

This was a substantial change due to the fact that I had to merge in
server side changes from master.
updated the seller's mainpage UI
fixed conflict in index.html
Merging seller-ui with master.

We really need to merge more often.