Make classchange_grid start up in compact view mode
Add missing </html> to classchange_grid template
Always use compact_classes display

The class change grid is not a replacement for the catalog.  It is not
designed to show complete descriptions of all classes in a searchable
fashion.  Thanks to Gary's changes in 4395f56, you can show the class
titles if you want... but I think it's a little excessive to have the
entire description there.

This also makes it possible to revert the grid to its initial display
mode.
Merge pull request #978 from learning-unlimited/classchange-tweak

Tweak to class changes grid - title display only