cubicweb #1827465 make default display of final value customizable [resolved]

eg, if one want space as thousand separator for float/int

prioritynormal
typeenhancement
done in3.13.2
load0.200
load left0.000
closed by#e157174c595c [uilib] reimplement printable_value function using a dictionary so one can easily change how to base type is displayed everywhere in the application. Closes #1827465