Summary:
Previously, maniphest tasks would get upated by diffs on branches
with tasky names, even if maniphest was disabled.
Test Plan:
Tested createing a diff in sandbox with maniphest disabled, on a
git branch named using the format "t###". Without this change,
if there happened to be a task in the maniphest DB which matched,
it was updated an email was sent to users.
Reviewers: epriestley
Reviewed By: epriestley
CC: wez, slawekbiel, whhone, Korvin, aran
Differential Revision: https://secure.phabricator.com/D6881
8bba3f280d