ConfigDialog: tweak widths computation

Small fixes to widths computation for a more balanced layout.
Decreased min width of names (on the left) from 33% to 25%, to
allow more room for toggles on the right.
(May make things a little bit too stretched out with english,
but should help with other languages that use longer words to
name things than english.)

Also ignore disabled option names in the names width calculation
(noticable on the PDF right most config menu, where toggles were
uneededly too small)

frontend/ui/widget/buttonprogresswidget.lua

@@ -13,6 +13,7 @@ local Screen = Device.screen
 local ButtonProgressWidget = InputContainer:new{
     width = Screen:scaleBySize(216),
     height = Size.item.height_default,
+    padding = Size.padding.small,
     font_face = "cfont",
     font_size = 16,
     enabled = true,
@@ -26,7 +27,7 @@ function ButtonProgressWidget:init()
         color = Blitbuffer.COLOR_GREY,
         radius = Size.radius.window,
         bordersize = 0,
-        padding = Size.padding.small,
+        padding = self.padding,
         dim = not self.enabled,
     }