Remove unnecessary usage of `_.bind`
Increase requirejs timeout period

The build times out on my netbook otherwise
Add code to dispose properly of gps view

Switching tabs will now dispose of and recreate the gps "track" view as
expected.
Merge branch 'features/router' of github.com:routemaster/routemaster-frontend into features/router

Conflicts:
	src/js/urlHandler.js