Add footer-divider.png (whoops!)

Change-Id: Ic3caff095f09a6405b48ad6fe8654195dabb60ee
Link directly to mobile site in CC-BY-SA 3.0 link

Bug: 67650
Change-Id: I609d87808d3d97b91b980270ab5fb3a50c6550b9
Hide images in toc for now.

Toc sub-section entries now indented (up to 3 sections deep).

Change-Id: I2b6a0697edc2d2aeec324f67096567312b10b8f0
Merge "Link directly to mobile site in CC-BY-SA 3.0 link"
Merge "Add footer-divider.png (whoops!)"