RDoc-300 adjustments in Raven.Abstractions/*, started working on Raven.Client.Lightweight
RDoc-300 added dummaries to IDatabaseCommands
RDoc-300 adding summaries to IAsyncAdminDatabaseCommands + ensuring that IAsyncAdminDatabaseCommands and IDatabaseCommands have identical method set
RDoc-300 making sure that IAsyncDatabaseCommands and IDatabaseCommands have same method set
formatting
RDoc-300 stripped ServerClient from comments
RDoc-300 stripped comments from AsyncServerClient
RavenDB-3064: Smuggler also exported deleted files therefore causing the import to contain them.
RDoc-300 summaries in Raven.Client.Lightweight/*
Merge branch 'master' of https://github.com/ayende/ravendb into RDoc-300

Conflicts:
	Raven.Client.Lightweight/Changes/IDatabaseChanges.cs
	Raven.Client.Lightweight/IDocumentStore.cs
Maybe Directory.Exists is just flat out lying to us?
RDoc-300 summaries in IAsyncDocumentSession and IDocumentQuery
RDoc-300 implemented GetDocumentUrl in Async sessions, added missing parameter (skipAfter) to async session, summaries in I(Async)DocumentSession
RDoc-300 reviewed summaries in IAdvancedDocumentSessionOperations
cleanup in ServerClient and AsyncServerClient
RDoc-300 summaries in ILazySessionOperations and IAsyncLazySessionOperations
Merge branch 'RDoc-300' of https://github.com/ppekrol/ravendb
RDoc-323 Data subscription's public API documented.
Merge branch 'RDoc-323' of https://github.com/arekais/ravendb
Avoiding error if we can't get permission to read the db