Merge pull request #11 from arkadyp/ng-layout

Updates borrow request front end
modified express to serve angular assets
Merge pull request #12 from wgester/master

express bugfix
Temporary fix to index.html to get a working version; changes server to listen on port 3000
Reverts server.js to listen to 'port'
Removes unnecessary date validation from directives.js (payback changed to time after receipt)
Changes loan payback from discrete date to drop-down menu for time period after loan receipt
Disables debt payback drop down menu until debt needed by is selected