Usability: Integrate with URL alias page and align with Drupal 6 "terms"

I have two usability suggestions here. First is that this module clearly provides additional settings for URL aliases. IMHO it should clearly be on the screen where URL aliases are anyway. The bulk deletion interface is already there and is disconnected from the path auto interface as evidenced by http://drupal.org/node/246658 My suggestion is to move the main pathauto settings page under the URL alias screen as "Automated alias settings". This would also migrate from the "Pathauto" menu title to a more sensible task based tab, which tells more about what does this actually do. Pathauto is so much a terminus technicus it should not be on the user interface.

The other usability suggestion included in this patch is to change all user facing references to taxonomy terms to taxonomy terms. Drupal 5 named this categories (and there are *lots* of places in the code where terms are named categories), but Drupal 6 does not use this term, so it is confusing. We should use the core term for this.

I have more usability suggestions coming up, and I'm also looking at writing some tests for the module, but I'd like to settle the URL I need to invoke in tests, hence the patch.

(Attached patch was rolled from the SVN repo I am using and should apply from the root to pathauto HEAD).