Change back to bootstrap-sass master

branch 3 has now been merged
Set viewport size for mobile devices

Resolves #104
Merge pull request #105 from seedpod/104-viewport

Set viewport size
Make images on about page responsive and centered
Make title text smaller on narrower displays
Merge pull request #106 from seedpod/responsive-images

Make images on about page responsive and centered
Change tagline layout on smaller screens
Fix position of social icons

Also make them get smaller on small screens, and hide the less important ones. Resolves #30
Merge pull request #107 from seedpod/responsive-headers

Responsive headers
Change to PNG image to fix #80

Not ideal, but I don't understand the problem with the SVG, so sod it (for now).
Remove h/vspaces and replace with padding

Resolves #41
Change remember me text

Also had to widen the login box slightly to accomodate. Resolves #51
Merge pull request #108 from seedpod/image-fix

Change to PNG image to fix #80
Merge pull request #110 from seedpod/no-more-hspace

Remove h/vspaces and replace with padding
Merge pull request #109 from seedpod/remember-me-text

Change remember me text
Merge branch 'refs/heads/master' into shipping-changes

Conflicts:
	app/views/layouts/application.html.erb