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/Collection.js

@@ -24,6 +24,11 @@ export default class Collection extends BaseModel {
   updatedAt: ?string;
   url: string;
 
+  @computed
+  get isPrivate(): boolean {
+    return this.private;
+  }
+
   @computed
   get isEmpty(): boolean {
     return this.documents.length === 0;

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 = () => {