Phriction - move "move" to modern editor + transactions
Ref T4029. Much like D10756, D10761 this does the bare minimum to get things in there. I have a sticky with "TODOs" about moving the error-checking business logic into the editor in all three cases.
Up next - policy...
Test Plan: moved a document and it worked! verified no feed story. verified both documents involved looked good
Reviewed By: epriestley
Subscribers: epriestley, Korvin
Maniphest Tasks: T4029
Differential Revision: https://secure.phabricator.com/D10763