Fix settings button

Signed-off-by: Mario Danic <mario@lovelyhq.com>

app/src/main/java/com/nextcloud/talk/controllers/ConversationsListController.java

@@ -246,6 +246,19 @@ public class ConversationsListController extends BaseController implements Searc
         }
     }
 
+    @Override
+    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
+        switch (item.getItemId()) {
+            case R.id.action_settings:
+                getRouter().pushController((RouterTransaction.with(new SettingsController())
+                        .pushChangeHandler(new VerticalChangeHandler())
+                        .popChangeHandler(new VerticalChangeHandler())));
+                return true;
+            default:
+                return super.onOptionsItemSelected(item);
+        }
+    }
+
     @Override
     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
         super.onCreateOptionsMenu(menu, inflater);