cubicweb-relationwidget #17048114 Modal title is not translated when customized using uicfg [validation pending]

uicfg supplied titles cannot be translated when passed to the widget's constructor (as the user's language cannot be determined yet), so it must be when building the options of the modal.

prioritynormal
typebug
done in0.4.1
load left0.000
closed by#7d28ad06022b Also translate dialog title when supplied through uicfg
patchAlso translate dialog title when supplied through uicfg [applied]