Check that min epoch < max epoch in PhabricatorFeedQuery::withEpochInRange()
Summary:
`PhabricatorFeedQuery::withEpochInRange()` returns zero results when passing parameters in the wrong order.
Instead return a PhutilArgumentUsageException which makes it clear why there are no results.
Test Plan:
On an early morning without coffee supply, write custom code like
```
$query = id(new PhabricatorFeedQuery())
->setViewer(PhabricatorUser::getOmnipotentUser())
->withFilterPHIDs(array($user->getPHID()))
->withEpochInRange(time(), time() - 86400)
->setReturnPartialResultsOnOverheat(true);
$stories = $query->execute();
```
and wonder why you get zero results. Optionally, feel stupid for a moment.
Apply patch, now get an "Unhandled Exception ("PhutilArgumentUsageException") - Minimum range must be lower than maximum range."
Reviewers: O1 Blessed Committers, valerio.bozzolan
Reviewed By: O1 Blessed Committers, valerio.bozzolan
Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno
Differential Revision: https://we.phorge.it/D25891