(bug 45068) Moodbar always assumed an AbuseFilter hit

After I72e1a6dd7dee19f889fc13b60456e9bfebd5e22b
AbuseFilter::filterAction is returning Status objects instead of
Booleans. As Moodbar kept checking for bool it always assumed a
filter was hit.

Change-Id: I8a4e84bc60555b03f9b02b3d489c9b1e68da3235