cubicweb #2167866 Translation of calendars [validation pending]

months and days are not translated

priorityimportant
typebug
done in3.14.5
load0.100
load left0.000
closed by#d07dadd8f664 fix events display in calendar (closes #2167866), #2d660890d3e8 [js] translate calendar in french (closes #2167866)