include 'jump to registered module' and 'jump to support area' in Course Overview block
add login layout
make site footer stick to the bottom of the page
full res image background for login page

responsive layout for login page with full resolution background image
Merge branch 'refs/heads/background_image_home' into develop
include attribution for background image
improved cropping
small style tweaks
Merge branch 'refs/heads/background_image_home' into develop