Initial port to using Firebase for real time updates and storage

Removed all Rails backend calls.
Successfully ported ListsView and ListViewEdit to Firebase.
ListItemsView is 70% done, however sorting ListItems is problematic and not complete.
Removed Firebase.collection. Changed to standard Firebase CRUD and standard Backbone collections

Lack of collection.sort() option in Backbone.Firebase.Collection prevented proper list reordering. Easy workaround is use native Backbone Collections and call the Firebase API directly with set(), remove(), update(). This allows collection.sort() to work as expected.
Remove firehose code, add active/post_activate code with Firebase
Port Timer functionality. Update Tock library

Timers now work with Firebase.
Pulled latest version of forked Tock library. Rewrote code to accommodate API changes to Tock.
Merge branch 'feature/firebase' into develop
Add Grunt deployment, fix sticky navbar, Firebase port complete

Add deployment tasks to Gruntfile.js
Redo file paths in index.html to obviate the <base href>
Add this.setStickyNavbar() call back to onRender so it works again
Closes #13
Closes #12
Release 0.9.0, First release!
Merge branch 'release/0.9.0'