Summary:
Fixes T4158. Two possible refinements:
- Maybe we should make all of these things respect `ManiphestCapabilityEditAssign::CAPABILITY`, etc. I think it's reasonable either way, and this is probably more intuitive and useful for most cases.
- Maybe we should check that you can see the policies before copying them. Again, this is sort of reasonable either way.
Test Plan: Created a new task from a template, saw that it inherited policies.
Reviewers: btrahan, hach-que
Reviewed By: hach-que
CC: aran
Maniphest Tasks: T4158
Differential Revision: https://secure.phabricator.com/D7649
e944cf8ff4