Update app,js 1.init Facebook while app.run 2.Add Facebook service.
Update login.js: add Facebook function
Update login.html: add Facebook login button.
disable html5 history api
Update app.factory 'Facebook' broadcast after get Facebook status.
Update Facebook login handling.
Add login scss
import login.scss
add include tmp css in index.html, remove it when done
Inject $location, after get user data from server, if user does not have band data, redirect to band.
Update login view and its style.
Redirect to bands if user is authorized and has no bands data.
Add Go.png and adjust login view layout and style.
Add scss for bands view.
update login image src
Merge branch 'schedule' into merge

Conflicts:
	app/scripts/app.js
hard-code bands
connect login and schedule
add date switching functions
add layout to half