Merge remote-tracking branch 'refs/remotes/github/2.3' , add import ip from userconfig

file and add some messaebox for easy use.

 Conflicts:
	GoGo Tester/Config.cs
	GoGo Tester/Form1.Designer.cs
	GoGo Tester/Form1.cs
	GoGo Tester/Properties/AssemblyInfo.cs
	GoGo Tester/Properties/Resources.Designer.cs
	GoGo Tester/app.config