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!).
This patch uses local URLs in parameters because it is more compatible
with various security hacks. Session key is not added automatically to
return url for safety reasons - we do not want to execute some random
action again. POST pages are now returned to course page too.
This patch introduces two new blocks global_navigation_tree and settings_navigation_tree
both of which have been designed to make full use of the new navigation objects available through
the $PAGE object.
Bulk of this code is within lib/navigationlib.php
