Changes to work with ServiceStack v4#3

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piotr-g wants to merge 2 commits intoAnthonyCarl:masterfrom

Commits on Sep 17, 2015

Changes needed for servicestack v4 (IRequestContext info has been merged into IRequest)
piotr-g
committed

Commits on Sep 18, 2015

changing API comments, argument and variable names (requestContext -> request)
piotr-g
committed