Add circle imgs; pause Yelp API use.

Add:
	static/css/make_tour.sass
		-make /make_tour images appear circular

Rem:
	py/google_places.py
		-temporarily remove Yelp API calls, to reduce load times and because
		it's almost superfluous (given that we have Google's Places API).

Ref:
	static/css/(app.sass, _make_tour.sass > make_tour.sass)
		-move _make_tour.sass into standalone make_tour.sass stylesheet
		-remove _make_tour.sas import from app.sass
		-make_tour.sass is only required by the second page, so it logically
		should only be included as an independent stylesheet by
		templates/make_tour.html
Change google_places API key.

Fix:
	py/google_places.py
		-google_places API key expired, loading the second page with a list of
		length zero and consequently throwing a NoneType error.
		-changed key to resolve
Style placeholder dialog box.

Add:
	templates/make_tour.html
		-add placeholder dialog box
		-one will be generated per location by Flask, and hidden once the
		document's ready; dialog boxes will fade in whenever a location's
		clicked

	static/css/make_tour.sass
		-style dialog box (fixed, centered div) and inner content
Add pop-up dialog for all locations.

Add:
	static/css/make_tour.sass, templates/make_tour.html
		-finalize styling/content of dialog boxes

	static/js/make_tour.js
		-add animation for individual dialog box (dis)appearance

Mod:
	py/google_places.py
		-changed API key again; the current expired.
Merge branch 'second_page_improvement'