[ADF-2562] Download a previous version (#3141)

* [ADF-2562] Download a previous version

* [ADF-2562] add input property to enable/disable version downloads

* [ADF-2562] add example in demo-shell

* [ADF-2562] unit tests

* [ADF-2561] View comments on previous versions (#3137)

* [ADF-2561] View comments on previous versions

add input property to enable/disable viewing version comments

* [ADF-2561] add more tests

* remove name property

* test fixes

lib/content-services/version-manager/version-manager.component.html

@@ -2,5 +2,9 @@
     <adf-version-upload [node]="node" (success)="onUploadSuccess($event)" (error)="onUploadError($event)"></adf-version-upload>
 </div>
 <div class="adf-version-list-container">
-    <adf-version-list #versionList [id]="node.id" [showComments]="showComments"></adf-version-list>
+    <adf-version-list
+        #versionList [id]="node.id"
+        [enableDownload]="enableDownload"
+        [showComments]="showComments">
+    </adf-version-list>
 </div>