Investigate porting hide query more menu if empty

[jezdez]

#208, PR: #209

We need to check if this is applicable to upstream since there may be other modifications to the menu in our fork requiring it.

[alison985]

This is no longer a necessary diff between upstream and our fork because the UI has changed. In upstream master this menu is no longer displayed at all before save - which is what this change does.

There is a difference in the menus - on our fork there is an extra option to "Manage Permissions" but it only displays after a query is saved so it has no application to this use case.

Closing ticket.