hgview #83773 display line and % of file shown in diff pane [validation pending]

In the diff pane at bottom left, it would be useful to display the % of the text currently shown and the line number.

prioritynormal
typeenhancement
done in1.5.0
load0.250
load left0.000
closed by#a15632eba319 [console] display text translation in source/diff pane (closes #83773)