[1.1.X] Form wizard documentation tweaks:

  * Simplified Sphinx references to FormWizard class.
  * Wrapped long lines.
  * Added references to template loader functions.

Backport of r11986 from trunk.


git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.1.X@11987 bcc190cf-cafb-0310-a4f2-bffc1f526a37