Disable Public server on Android, upd background

builtin/mainmenu/tab_server.lua

@@ -25,20 +25,25 @@ local function get_formspec(tabview, name, tabdata)
 	local retval =
 		"button[4,4.15;2.6,0.5;world_delete;" .. fgettext("Delete") .. "]" ..
 		"button[6.5,4.15;2.8,0.5;world_create;" .. fgettext("New") .. "]" ..
-		"button[9.2,4.15;2.55,0.5;world_configure;" .. fgettext("Configure") .. "]" ..
+--		"button[9.2,4.15;2.55,0.5;world_configure;" .. fgettext("Configure") .. "]" ..
 		"button[8.5,4.95;3.25,0.5;start_server;" .. fgettext("Start Game") .. "]" ..
 		"label[4,-0.25;" .. fgettext("Select World:") .. "]" ..
 		"checkbox[0.25,0.25;cb_creative_mode;" .. fgettext("Creative Inventory") .. ";" ..
 		dump(core.setting_getbool("creative_mode")) .. "]" ..
 		"checkbox[0.25,0.7;cb_enable_damage;" .. fgettext("Survival Mode") .. ";" ..
 		dump(core.setting_getbool("enable_damage")) .. "]" ..
-		"checkbox[0.25,1.15;cb_server_announce;" .. fgettext("Public") .. ";" ..
 		dump(core.setting_getbool("server_announce")) .. "]" ..
 		"label[0.25,2.2;" .. fgettext("Name/Password") .. "]" ..
 		"field[0.55,3.2;3.5,0.5;te_playername;;" ..
 		core.formspec_escape(core.setting_get("name")) .. "]" ..
 		"pwdfield[0.55,4;3.5,0.5;te_passwd;]"
 
+	if PLATFORM ~= "Android" then
+		retval = retval ..
+			"checkbox[0.25,1.15;cb_server_announce;" .. fgettext("Public") .. ";"
+		return retval
+	end
+		
 	local bind_addr = core.setting_get("bind_address")
 	if bind_addr ~= nil and bind_addr ~= "" then
 		retval = retval ..