cubicweb-conference #684177 Adapt the action menu to the talk workflow [validation pending]

This ticket is related to #489048 : a talk with a status set to "draft" or "correction" can be edited by the author.

prioritynormal
typeenhancement
done in0.4.0
load0.100
load left0.000
closed by#5b3ce9eecdef adapt the action menu to the new talk workflow (closes #684177)