More small tweaks (and why that's powerful)

 I kept working on the query page and also updated tests that were broken by changes from yesterday!

It's small, but here's the theory:

A 1% improvement every day for a year becomes a factor of almost 38.

After six years you end up at a factor of a billion.

The point is that some kinds of improvements compound and if you can make those you end up with something really powerful.

So if I can make compounding improvements to the service offered by PgScope then I'll end up with quite the service!