i've explained to many people over the years (and continue doing so) that you have to fill in details when reverting a commit.  just hitting the "Revert" and "Submit" buttons is not sufficient.

can we make this easier in gerrit ?  here's the ideal workflow:
- when hitting Revert, the generated commit message will preserve all BUG= and Bug: lines
- the UI that comes up should include two text fields: the first one includes the "revert xxx" message that is generated today, and the second field is left blank -- but gerrit won't let you revert until you enter some information into that as to *why* the CL is being reverted.