Splits Adapter loading from AdaptableController

- Adds dynamic prototype conformance check upon setting adapter
- Throws when adapter is undefined, invalid in controller

src/Controllers/FilesController.js

@@ -2,6 +2,7 @@
 import { Parse } from 'parse/node';
 import { randomHexString } from '../cryptoUtils';
 import AdaptableController from './AdaptableController';
+import { FilesAdapter } from '../Adapters/Files/FilesAdapter';
 
 export class FilesController extends AdaptableController {
 
@@ -29,7 +30,7 @@ export class FilesController extends AdaptableController {
    * with the current mount point and app id.
    * Object may be a single object or list of REST-format objects.
    */
-  expandFilesInObject(config, object) {
+   expandFilesInObject(config, object) {
     if (object instanceof Array) {
       object.map((obj) => this.expandFilesInObject(config, obj));
       return;
@@ -52,6 +53,10 @@ export class FilesController extends AdaptableController {
       }
     }
   }
+  
+  expectedAdapterType() {
+    return FilesAdapter;
+  }
 }
 
 export default FilesController;