cubicweb-forgotpwd #4451119 replace PIL dependency with Pillow [validation pending]

prioritynormal
typeenhancement
done in0.6.0
load0.250
load left0.000
closed by#3b6474298c01 Depends on Pillow instead of PIL (closes #4451119)
patchDepends on Pillow instead of PIL (closes #4451119) [applied]