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:

DNN.Blog/Server/Blog/Controls/ManagementPanel.ascx

Line 3 in afdeb64

<div style="height:40px" id="pnlManagement" runat="server">

Describe alternatives you've considered

Styling based on the generated id:

Additional context

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