move My Submissions to primary nav (bug 860373)

Note that only comment #13 (https://bugzilla.mozilla.org/show_bug.cgi?id=860373#c13) is relevant. The discussion around this minor issue got a bit out of hand and was reined back in.
Useful enough to have duplicate (and confusing imo) nav? Ignoring the mockup redesign, which is out of scope for now, do you feel strongly that we should keep this somehow?