Remove classes and modules list from page sidebar

This list can be much, much too long to include on a page.  The user can
use the links at the top of the page instead.
Reduce line height in Table of Contents

This was much too large for the page.
Improve accessibility of the Table of Contents

Removed expanding boxes for per-page ToC.

Reduced whitespace

Renamed "Classes/Modules" to "Classes and Modules"