[Develop] bugzilla timeline

[will]

I'm made the Bugzilla timeline script "live" and you can get to it by a 
link at the top of the Bugzilla page.  Also:

    http://bugzilla.pculture.org/timeline.cgi

The primary use cases for it were these:

  - show bug activity for a product over a span of time
  - show bug activity for a specific person over a span of time

I use it to see what's been happening in the last week and also to get 
an idea of what I did in the last week when I go to do a status report.

Thoughts and suggestions are more than welcome, but I don't plan on 
spending a lot of time with the script in the near future.  So if there 
are changes people want to make, I'll probably defer them until a rainy day.

/will