…t javascript breaking in page

#4

…in courses list. Fixes #6. Fixes #5

Fixes #11

… a side-bar. Fixes #18

  This adds optional pagination to the list of courses presented in
  the course_overview block, preventing a memory issue if the
  user is enrolled in a lot of courses.

  Changes:
    - Show only the set number courses in the block
    - Show pagination links for other pages
    - Block setting to select default number of courses to show
    - Block setting to select maximum number for user setting
    - User setting via dashboard to override block default

    This adds a course sort order of "Course id desc" to the block settings.
    Previously Course id (asc only) was available.

  This fixes the Favourites and Courses tab content swapping
  places (in some themes) when rearranging the courses order
  in the Courses tab.

Send correct tab name when editing course order

Add course sort order "Course id desc"