Rework profile panel, fix about page scrolling.

Add:
	templates/layout.html, static/js/(app, google_oauth).js
		-modify layout and animations of Google profile-panel in top-right
		corner of page.

	templates/about.html, static/js/smooth-scroll.js
		-fix defunct smooth-scrolling down the page by removing existing
		javascript and incorporating the smooth-scroll.js plugin.