moved "Chosen" building multi-select code into format_location_filter method so it functions properly
fix SPOT-991
adds optional authentication, changes how filter menu appears, adds initial favorites template
Fixed relative url issues for SPOT-1403
Reverse url lookups for SPOT-1403.
Removed the optgroups if isMobile is true - select multiple with optgroups causes a Safari segfault. Fixes SPOT-991.
Moved en_US locale to en and added back values that went missing.
You can now select buildings, so this should be plural.
Moved the back button to a better location on Desktop. Fixes SPOT-1330.
Updated FAQ link everywhere.
SPOT-882

Don't put an empty <p> tag in there if there aren't access notes!
SPOT-1062, SPOT-1140

Removing no pref.  There's no way to implement what those dropdowns had in a meaningful way.  Start and end now both default to now, and are reset properly.
Request the release version of the maps API if we're using an API key.
The mobile subpages don't load a map, and therefore don't need the maps API.
Hid the login link for now for the release we're building.
adds favorite icon to desktop, favorites page and rough initial template
tidies up mobile ui filter setting
adds fontawesome fonts directory
filter styling, closing panel acts like cancel, reset only resets form
more filter ui tightening, adds favorites set/clear
only polls for favorites if visible, filter button styling adjustment