Fix scraping secondary thread tags.

We were inadvertently skipping over them because thread lists don't include
their ID.
Bump secondary thread tag badge down one, right one.
Fix shell script errors during build.

* It's /dev/null with two ells.
* And we should silence that output each time.
Don't animate basement layout on first showing.

Just looks stupid.
Basement sidebar receives -view{Will,Did}{Appear,Disappear} each time it's toggled.

This allows the sidebar to (not) update its view depending on when it's
visible, even though it never leaves the window after its first showing.
Fix TestFlight upload script.

* Add path for `mate` command. (Should use $VISUAL/$EDITOR but whatever.)
* Run git-tag in the right place.
Fix nobody having build access after uploading build to TestFlight.