cubicweb-forum #2967438 nosy_list relation definition for Comment conflicts with that of forge [validation pending]

prioritynormal
typebug
done in0.1.0
load0.100
load left0.000
closed by#20ef33d3d483 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]