As a reviewer I am required to enter a rejection comment when rejecting a translation so that translators know what to fix.
committed into master: https://github.com/zanata/zanata-server/pull/60
Verified. Tested at 9067f4a67ecddfa5ecfebd80063c4dc5c77407f7 Minor edge case bug found https://bugzilla.redhat.com/show_bug.cgi?id=987250
Closing VERIFIED bugs which predate Zanata 3.1.2.