Update docs for DotVVM 2.0

[quigamdev]

Review

• Resources
• Route registration
• DotVVM registration (app.UseDotVVM and app.AddDotVVM)
• Postback Handlers (TranslateValueOrBinding, js api)
• Concurrency Mode
• Repeater and GridView docs (_collection, _index, etc.)
• IoC/DI Containers
• MiniProfiler (owin registration)
• Embedded resource registration (markup control, dothtml page)

etc.

[adamjez]

We should review this issue and resolve it asap.. eg.: #47 is waiting to be accepted. @quigamdev