Make component variables public that are used in templates

-Note: Will have to port this to master for next release. Required for
aot compilation and all future versions of angular. see
angular/angular-cli#5621

src/app/sandbox-ccda-component/sandbox-ccda.component.ts

@@ -11,8 +11,8 @@ const scorecard_url = environment.scorecard_url;
     templateUrl: 'sandbox-ccda.component.html'
 })
 export class SandboxCCDAComponent implements OnInit {
-  private scorecard_url: string;
-  
+  public scorecard_url: string;
+
   constructor() {
     this.scorecard_url = scorecard_url;
   }

src/app/sandbox-fhir-component/sandbox-fhir.component.ts

@@ -12,11 +12,11 @@ const fhir_inferno_data_url = environment.fhir_inferno_data_url;
   templateUrl: './sandbox-fhir.component.html'
 })
 export class SandboxFhirComponent implements OnInit {
-  private fhir_server_url: string;
-  private fhir_query_url: string;
-  private fhir_conformance_url: string;
-  private fhir_bulk_data_url: string;
-  private fhir_inferno_data_url: string;
+  public fhir_server_url: string;
+  public fhir_query_url: string;
+  public fhir_conformance_url: string;
+  public fhir_bulk_data_url: string;
+  public fhir_inferno_data_url: string;
 
   constructor() {
     this.fhir_server_url = fhir_server_url;