Fix translations

Summary: Theses are sort of silly anyway since they should all have the actor in them rather than being sentence fragments, but make them work OK for English at least. See D3013.

Test Plan:
Ran:

echo pht('added %d dependencie(s): %s', 1, 'derp')."\n";
echo pht('added %d dependencie(s): %s', 2, 'derp, derp')."\n";

Got:

added dependency: derp
added dependencies: derp, derp

Reviewers: vrana, btrahan

Reviewed By: vrana

CC: aran

Differential Revision: https://secure.phabricator.com/D3015