Cnange Action on service for ScrathViewModel and ScrachView

[vertigra]

• Service prototype
• Clean oldest code
• IMessageDialogManager to service
• Fix the DelegateCommand in the ScratchControlViewModel according to the code development rules
• Remove SendSourceToScriptEditor Action and send source code by param
• Dispose new service
• Highligting in ScrathView not work #30
• Divided service on: view event and view model event??
• Fix enabling and disabling buttons during actions