big modification: added login window, and simple communications with the server

	modified:   DiaryManager/Form1.Designer.cs
	modified:   DiaryManager/Form1.cs
	new file:   DiaryManager/Service1.cs
	new file:   DiaryManager/frmLogin.Designer.cs
	new file:   DiaryManager/frmLogin.cs
	new file:   DiaryManager/frmLogin.resx
the 	Service1.cs is an auto-generated file using the wsdl tools. you may need to configure it by yourself.