Added advanced settings to allow taxonomy_breadcrumb to ignore node types that...

Added advanced settings to allow taxonomy_breadcrumb to ignore node types that have their own breadcrumbs generated by other modules (i.e. the book module provides it's own breadcrumbs and taxonomy_breadcrumb shouldn't interfere) (see http://drupal.org/node/65411).
Changed the function taxonomy_breadcrumb_generate_breadcrumb() to taxonomy_breadcrumb_generate_breadcrumb($nid).  This will make it easier for other modules to use taxonomy_breadcrumb to generate taxonomy based breadcrumbs (see http://drupal.org/node/84330).
Prevent taxonomy_breadcrumb for controlling breadcrumbs on the [home] page "node/"
Fixed a few typos and spelling error on the admin pages.