refactor all remaining self links in mocks

src/app/core/shared/dspace-object.model.ts

@@ -52,12 +52,22 @@ export class DSpaceObject extends ListableObject implements CacheableObject {
   type: ResourceType;
 
   /**
-   * A shorthand for this DSpaceObject's self link
+   * A shorthand to get this DSpaceObject's self link
    */
   get self(): string {
     return this._links.self.href;
   }
 
+  /**
+   * A shorthand to set this DSpaceObject's self link
+   */
+  set self(v: string) {
+    debugger;
+    this._links.self = {
+      href: v
+    };
+  }
+
   /**
    * The name for this DSpaceObject
    */