Improves usability of the admin/menu page.

  readability of the code.

- Patch #28062 by Souvent22: make it possible to assign weights to contact form categories and fixed some small glitches.

   + Fixed problem with configuration of comment display options.
   + Introduced defines for the various comment settings.

- Patch #35524 by asimmonds / drewish: converted the custom block forms code to the forms API's execute model.

  If your module uses variable_get('file_directory_temp', ...) or
  variable_get('file_directory_path', ...) please update it to use the new
  API.

  A list of affected modules is available at http://drupal.org/node/26249#comment-54194.

- Patch #35178 by Robert Douglas: add title attribute to taxonomy links - use term description as text.