8e917e11c2
Handle edit refs from Change.Id#fromRef, and add a new method #fromAllUsersRef for parsing from refs in All-Users. Note that it's not possible to combine these into one method that takes a project name, since at this low level in the code we don't have access to the live config-based AllUsersName. Change-Id: I55ae5340efa964bbe7965a0a491ae27ce620044c