Switch to bootstrap-sass 3

Need rails_admin static boostrap 2 branch as well, for now.
remove DS_Store files
Add path fill style to SVG so we can easily change colour later
Move main logo into pods#index
MASSIVE GODDAMN CABBAGE
Remove duff comment
Re-add the homepage button in a warning colour
Remove redundant CSS background
Move nav bar to bottom of screen
Bottom navbar goodness
Hide teaser sections for now
Updated tagline
Adjust font sizes
Rename image files
Move main logo down
Try having explanatory text back in again instead of tagline