Add CSS class to manage buttons wrapper

[Timo-Breumelhof]

Is your feature request related to a problem?

Please describe. I would like to style the distances between the buttons on top and the entries. For that it would be nice if the block of buttons has a CSS class so I can address it using CSS.

Describe the solution you'd like

Add a class to this element: https://github.com/DNNCommunity/DNN.Blog/blob/afdeb64a100a804ed2254182b90027d624a0346e/Server/Blog/Controls/ManagementPanel.ascx#L3

Describe alternatives you've considered

Styling based on the generated id:

Additional context

Add any other context or screenshots about the feature request here.