Hello!

I needed a way to display sidebar plugins only within specific categories.
Unfortunately the neatest way I could think to do this was to have an
additional configuration option for each sidebar plugin that allows you to
specify a specific category for that plugin to be displayed within.

The end result requires a patch to Serendipity 1.1.1 (included). Once
patched, you can install this plugin and start configuring your sidebars.

This is version 0.01, and has not been extensively tested and whatnot, and
as such comes with NO WARRANTY WHATSOEVER. 

Enjoy!

 - Simon
   <simon@butcher.name>
   http://simon.butcher.name/
