Move document improvements (#927)

* Show all collections in UI

* Introduce command pattern

* Actually remove from previous collection

* Stash

* Fixes: Promises resolved outside of response lifecycle

* 💚

* 💚

* documentMover tests

* Transaction

* Perf. More in transactions

app/models/Document.js

@@ -234,8 +234,8 @@ export default class Document extends BaseModel {
     }
   };
 
-  move = (parentDocumentId: ?string) => {
-    return this.store.move(this, parentDocumentId);
+  move = (collectionId: string, parentDocumentId: ?string) => {
+    return this.store.move(this, collectionId, parentDocumentId);
   };
 
   duplicate = () => {