Moved request domain helper functions in akvo.rsr.middleware into encapsulated methods of akvo.rsr.middleware.PartnerSitesRouterMiddleware.
Moved request domain helper functions in akvo.rsr.middleware into encapsulated methods of akvo.rsr.middleware.PartnerSitesRouterMiddleware.

akvo/akvo-rsr,akvo/akvo-rsr,akvo/akvo-rsr,akvo/akvo-rsr