If location unknown, assume it's infinitely far away
Don't recenter/zoom the map if we don't know where we are
Refuse to set a null location
Fix brain dead behavior when computing distance to unknown location
Merge remote-tracking branch 'origin/master' into fix/capstop-nullptr

Conflicts:
	app/src/main/java/co/createch/MetroRappid/ui/RouteMapFragment.java
Merge pull request #20 from sethgho/fix/capstop-nullptr

Fix a null pointer exception when location is unknown