Add 'show col in bugzilla'; minor cleanup.

The "show column in bugzilla" feature turns this display into a remarkably powerful tool for various folks. We use it (in the kanbugger plugin) to ...

* instantly see what state the bugs are in (do they need verification??)
* modify all of the bugs in one step with a version or release number (we're about to launch!!) using the "edit multiple bugs at once" function in BZ.

I also got rid of a few stray tab characters and did a tiny bit of indentation cleanup.