dummy integration of userapp login/signup
fixed issue with bower include of userapp.client.js
implemented Tony's page state chart

except the following points:
- when accessing a gym page without being logged in, there is no rediretion back to gym after login completed
added log-in-out directive for navbar button
added feedback-button directive
added note about which API endpoint is used

Conflicts:
	app/scripts/app.js
relayoutet route meta into more tabular form
improved layout of edit buttons