make list requests function with the arguments passed in the requests
Merge branch 'master' of https://github.com/basespace/basespace-csharp-sdk
Merge branch 'master' into develop

Conflicts:
	BaseSpace.SDK/BaseSpaceClient.cs
	BaseSpace.SDK/Infrastructure/JsonWebClient.cs
Simplified GetFunc() in AbstractRequest.cs.
Fixed FileContentRedirectMetaRequest.cs since ServiceStack builds the query parameters.
Removed all BuildUrl() in all the List*Request classes because ServiceStack accomplishes the same thing.
Renamed GetFunc() to GetSendFunc().