Menu button support for dictquicklookup, sortwidget, keyboard settings for NT (#11933)

Menu key support for some widgets. would have closed #11783 and #6463 (cumulative with @comphilip's fixes)

It fixes a problem where some virtual keys were not available for non-touch users. closes #11862

Also, adds keyboard settings to non-touch devices. closes #11934

frontend/ui/widget/sortwidget.lua

@@ -153,6 +153,7 @@ function SortWidget:init()
         self.key_events.Close = { { Device.input.group.Back } }
         self.key_events.NextPage = { { Device.input.group.PgFwd } }
         self.key_events.PrevPage = { { Device.input.group.PgBack } }
+        self.key_events.ShowWidgetMenu = { { "Menu" } }
     end
     if Device:isTouchDevice() then
         self.ges_events.Swipe = {
@@ -273,6 +274,11 @@ function SortWidget:init()
     }
     table.insert(self.layout, {
         self.footer_cancel,
+        self.footer_first_up,
+        self.footer_left,
+        self.footer_page,
+        self.footer_right,
+        self.footer_last_down,
         self.footer_ok,
     })
     local bottom_line = LineWidget:new{
@@ -475,6 +481,10 @@ function SortWidget:onSwipe(arg, ges_ev)
     end
 end
 
+function SortWidget:onShowWidgetMenu()
+    self:showMenu()
+end
+
 function SortWidget:showMenu()
     local dialog
     local buttons = {