cubicweb-forge #2969190 nosy_list RelationDefinition Comment-> CWUser should be defined only if it does not exist yet [validation pending]

In order the cube to be assembled with others, e.g. forum.

Warning: proposed patch for this ticket requires yams 0.38, see https://www.logilab.org/ticket/149660

prioritynormal
typebug
done in1.10.0
load0.100
load left0.000
closed by#e09af85feac4 Only define nosy_list relation for Comment if it has not already been defined
patchOnly define nosy_list relation for Comment if it has not already been defined [applied]