Passes response.regions and response.regions[scope.region] as trusted HTML to the scope.

Previously, the output would have been pruned by Angular not to include, among others, IDs. This makes anchors useless, on which some ePatient sites, including a number of ePatient sites' privacy sections' table of contents rely. To alleviate this, the `pageGroup` and the `feincmsPageRegion` directives were amended so as to return their original result as angular trusted HTML (`$sce.trustAsHtml()`).