To take advantage of native accessibility features of lists such as counting
the number of items in the list for screen readers, the nav menu should
wrap it's links in unordered list markup.
This patch includes a big set of changes that are all designed to work together to provide
a better way to navigate in the new theme, and a different way of working with blocks.
Blocks have been moved to a "drawer" that can be opened and closed (this is remembered in a user pref).
A new "flat navigation" element is also available in a drawer - which should let you do 90% of things
without needing to open the "blocks" drawer.
The flat navigation is build from specific parts of the nav tree - the top nodes like "calendar, dashboard" are
hand picked. There is a mycourses node listing your enrolled courses.
There is a node for the current course, built from the top nodes in the current course node in the nav tree.
Administrators have a link to the Site admin settings here too.
These nav elements are used by the templates for the new theme, which also has a resigned layout for login and signup.
There have also been some additional fixes / improvements to the scss for the new theme which goes along with these
layout changes.
This set of changes is a collaboration between Martin, Damyon and Alberto (thanks!).
