[gh-518] Upgrade Drupal Core to 7.17
[gh-552] Add block-menu-block class to book navigation block
[gh-552] Remove debug statements from 7314947
[gh-552] Merge Menu Block and Book Navigation CSS; Update colors

Result of adding the class in 7314947; Use WDN colors
[gh-552] Remove navigation contextual links css; clean up comments

The navlinks region is printed without the $title_suffix so
hiding with css is not needed. Also save some bytes with comment formatting
[gh-552] Remove background color on book root h3 link
[gh-552] Alter menu block css to work with both book nav settings

'Book Navigation: Show block on all pages' adds another div wrapper in between
.content and ul
[gh-552] Move expanded/collapsed carrot to left side, switch px to em
Merge pull request #556 from erasmussen2/issue-552

Closes #552
[gh-518] Upgrade Drupal Core to 7.18
Merge pull request #564 from tsteiner2/issue-518

Closes #518. (Upgrade Drupal Core to 7.18)