Fix recalc_abilities script

[Oaphi]

Say hi to our first (rather basic, but still) test for scripts as well!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.02%. Comparing base (f4811c5) to head (3d6fd01).

Additional details and impacted files

Components	Coverage Δ
controllers	76.84% <ø> (ø)
helpers	85.47% <ø> (ø)
jobs	77.43% <ø> (ø)
models	93.23% <ø> (ø)
tasks	61.11% <ø> (ø)
scripts	∅ <ø> (∅)

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[cellio]

I'm still having a problem where the script doesn't actually seem to recalculate abilities, though hitting the "recalc abilities" button for a user directly in the mod tools does work. I'm guessing there's some difference in the paths taken to the "actually do it" code from the button vs from the script, and therein lurks a problem.

Retracted. The script runs based on a queue and the mod tool doesn't count as a queuable event. When I did something to actually force something into the queue, the script worked as expected. (Filed #2134 for the queue/tool mismatch.)