Simplified HMR for Shell (#189)

Simplified HMR Version now that we have shell loading working.

Author: jdillick

src/app/main.js

@@ -14,19 +14,7 @@ __webpack_public_path__ = window.resourceBaseUrl || '/assets/js/';
         await AppError(error);
     }
 
-    /**
-     * @description Initialize the app.
-     */
     if (module.hot) {
-        module.hot.accept(
-            [
-                '../.././.core/dependencies/index.js',
-                '../.././.core/app.js',
-                '../.././.core/sdk/index.js',
-            ],
-            () => {
-                window.location.reload();
-            },
-        );
+        module.hot.accept(['../../.core/app/shell.js'], window.location.reload);
     }
 })();