Merge of MonoTouch.Dialog and MonoDroid.Dialog

This is merge of

• MonoTouch.Dialog https://github.com/migueldeicaza/MonoTouch.Dialog and
• MonoDroid.Dialog https://github.com/kevinmcmahon/MonoDroid.Dialog

This merge contains some smaller fixes

• common namespace MonoMobile.Dialog

For devs working with VisualStudio for MonoTouch.Dialog projects

• remove reference to System.Json.dll and
• add reference to System.Json.DLL_03_MT from System.Json project https://github.com/moljac/System.Json

Miljenko Cvjetko - mel

http://holisticware.net