optimise routes and guards (#676)

* reduce duplicate settings

* simplify guards/resolvers

* fetch data after 401

* unit tests

* extra unit tests

* unit tests for auth guard

* trashcan tests

src/app/testing/app-testing.module.ts

@@ -80,6 +80,13 @@ import { MaterialModule } from '../material.module';
         },
         getRedirect(): string {
           return null;
+        },
+        setRedirect() {},
+        isOauth(): boolean {
+          return false;
+        },
+        isOAuthWithoutSilentLogin(): boolean {
+          return false;
         }
       }
     },