Add jquery leanmodal
Remove js/ folder
Replace SheetSync with GridHub
Merge pull request #79 from johnheroy/master

Add jquery leanmodal, remove js folder, replace sheetsync with gridhub
add angular dependencies to bower.json
add angular module to application
add layout module
move all html to shell.html template
add widgets module
add shell controller
refactor tabs to use directives
add formula bar back in
move tab directive template to it's own file
add utils module
resolve conflicts