checked function added to battery comp. (alt status bar)

frontend/apps/reader/modules/readercoptlistener.lua

@@ -207,7 +207,7 @@ The alternative status bar can be configured here.]])
 
 function ReaderCoptListener:getAltStatusBarMenu()
     return {
-        text = _("Alt status bar"),
+        text = _("Alternative status bar"),
         separator = true,
         sub_item_table = {
             {
@@ -294,15 +294,18 @@ function ReaderCoptListener:getAltStatusBarMenu()
             },
             {
                 text_func = function()
-                    local status = _("off")
+                    local status = _(" ")
                     if self.battery == 1 then
                         if self.battery_percent == 1 then
-                            status = _("percentage")
+                            status = _(": percentage")
                         else
-                            status = _("icon")
+                            status = _(": icon")
                         end
                     end
-                    return T(_("Battery status: %1"), status)
+                    return T(_("Battery status".. "%1"), status)
+                end,
+                checked_func = function()
+                    return self.battery == 1 and self.battery_percent == 0 or self.battery_percent == 1
                 end,
                 sub_item_table = {
                     {