Fix arr index error; add color to makeTour.

Add:
	py/google_places.py
		-add new API key.

Mod:
	templates/make_tour.html
		-make currently selected location photographs appear tinted
		green.

Fix:
	py/google_directions.py
		-fix index-out-of-bounds bug, caused by attempting to optimize a
		list of either no waypoints, or only one; the Google Directions
		call wouldn't return an optimized list, and the app would
		ultimately attempt accessing an unexistent index.