store last dev agreement date on the user when they submit a new addon (bug 695978)
Module for Australis contest winners (bug 1009759)
Merge pull request #94 from yohanboniface/bug-1009759-australis-contest-results

Module for Australis contest winners (bug 1009759)
Merge pull request #74 from magopian/695978-developer-agreement-date

store last dev agreement date on the user when they submit a new addon (bug 695978)