Implement DestructibleInterface for Owners Packages
Summary:
Fixes T9945. This is straightforward.
The two sub-object types are very lightweight so I just deleted them directly instead of loading + delete()'ing (or implementing DestructibleInterface on them, which would require they have PHIDs).
Also improve a US English localization.
Test Plan:
- Used bin/remove destroy PHID-... --trace to destroy a package.
- Verified it was gone.
- Inspected the SQL in the log for general reasonableness.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T9945
Differential Revision: https://secure.phabricator.com/D14729