fix bug in RestoreLastBackLightBrightness

sysgo/UI/main_screen.go

@@ -172,6 +172,7 @@ func NewMainScreen() *MainScreen {
 	
 	m.MsgBoxFont = Fonts["veramono20"]
 	m.IconFont   = Fonts["varela15"]
+  m.Closed = false
 	return m
 }
 

sysgo/UI/title_bar.go

@@ -139,6 +139,8 @@ func NewTitleBar() *TitleBar {
 
 	t.TitleFont = Fonts["varela16"]
 	t.TimeFont  = Fonts["varela12"]
+  
+  t.InLowBackLight = -1
 	return t
 	
 }