cubicweb-conference #971736 open/close abstract submission and registration [resolved]

today it is not possible to close abstract submission and conference registration. maybe adding two attributes to the conference entity would be enough.

priorityimportant
typeenhancement
done in0.7.0
load0.300
load left0.000
closed by#ffe0dfc60cf2 [all] add {call,reg}_open attributes to Conference and adapt views (closes #971736)