taxi 5.x-1.3

This is the right one. 1.2 it's not ok.

Added contributions and feature requests:

• Allow customizable display weight for taxi output, by jrbeeman
• Include cache_taxi in Devel modules cache clearing mechanism, by jrbeeman
• Ability to theme taxonomy term output, by jrbeeman
• New feature:Taxi is now blockable, with it's own CSS page and theme function, as well as a couple basic config options

Bugs to squash:

• Taxi page times out with large Taxonomies, should have put a warning, but I forgot, sorry! I'll be looking into this shortly, I hope