Test that baseapp correctly handles gas on aborted txs

[ValarDragon]

Essentially a test case for #3244

[cwgoes]

Let's do this; baseapp in general needs far better test coverage.

[cwgoes]

cc @sunnya97 - interested / thoughts?

[alexanderbez]

If not, I can pick it up.

[jackzampolin]

@alexanderbez this would be a great test to add.