Switch from .rvmrc to .ruby-version

ruby-version is cross compatible with other Ruby version managers
bundle update devise (for security)
Make donations go to PlanningAlerts donation page on OAF website now
Change donate link
Running through site performing visual fixes.
Treatment for mobile-nav.
Merge remote-tracking branch 'upstream/master' into design/initial

* upstream/master:
  Change donate link
  Make donations go to PlanningAlerts donation page on OAF website now
  bundle update devise (for security)
  Switch from .rvmrc to .ruby-version

Conflicts:
	app/views/static/donate.html.haml
Adjust donate button.
Fix use of 1.9 hash. Some text shadow for titles.