Restrict work item list to admin only

mobile/src/Activity/Activity.js

@@ -106,6 +106,7 @@ export class Activity extends React.Component {
             this.setState({
               binder: new FormBinder(
                 {
+                  ...this.state.binder.getOriginalFieldValues(),
                   workItem: workItem._id,
                   team: api.loggedInUser.team,
                 },
@@ -143,7 +144,7 @@ export class Activity extends React.Component {
               binder: new FormBinder(activity, Activity.bindings),
             })
 
-            getWorkItem(activity.workItemId)
+            return getWorkItem(activity.workItem)
           }
         })
         .catch((err) => {