feat(app): update to angular 1.2.0

Update Angular and its deps to 1.2.0. Also updates other deps.

Breaking changes: The gruntfile has changed slightly. Specifically ngmin
has been moved in the build order and its config targets have been
updated from dist to tmp
Merge pull request #439 from eddiemonge/ngupdate

feat(app): update to angular 1.2.0