R1:4f615ad2a936

Allow excluding paths from package

Summary: Resolves T2149.

Test Plan:
$ bin/storage upgrade

# /owners/ - saw +
# /owners/package/1/ - saw +
# /owners/edit/1/ - added exclude paths, saw correct e-mail
# /rPabc123 - included paths are still highlighted and excluded not
# /owners/view/search/?path=/included/ - found
# /owners/view/search/?path=/excluded/ - not found
# owners.query - path: /included/
# owners.query - path: /excluded/
# new unit test

PhabricatorOwnersPackage::loadAffectedPackages…