Land desktop changeset verification, cef logging, release editing/deletion, and placeholders/tooltips. Bug numbers and detailed messages below.
bug 810411: add placeholders/tooltips in submission forms. r=rail
bug 825238: implement cef logging in release kickoff. r=catlee
bug 824980: make releases deletable. r=rail
bug 824980: make releases editable. r=rail
bug 824957: verify format of desktop releases' changesets file