cubicweb-email #2746673 upgrade to API of cw 3.14 [validation pending]

prioritynormal
typeenhancement
done in1.10.0
load0.100
load left0.000
closed by#9ba5203e1120 upgrade to API of cw 3.14 (closes #2746673)
patchupgrade to API of cw 3.14 (closes #2746673) [applied]