Small changes to authentication

User now must be authenticated to view contents of profile, and can only view own profile once authenticated.  Redirects home if not authenticated.  TODO: styling.
Merge branch 'master' into styles_for_profile

Adds css for index page

Conflicts:
	app/assets/javascripts/welcome.js
Added main CSS for website.
Merge pull request #10 from rjbernaldo/styles_for_profile

Styles for profile