Styling updates on main menu edit

Log in as an admin. Navigate to "Site home" Turn editing on from the cog menu Add the "Main menu" block Add four activities to it including: at least one label at least one non-label One URL resource with "Display" (under Appearance category) set to "In pop-up". Indent two of them. Confirm that it displays correctly. Move them to the general section of the front page (click - you can't drag here). Confirm that the indenting is still displayed correctly. Change the indenting on one of them. Move them both back to the block. Confirm the indenting is still OK. Confirm there isn't additional white space between a label and its action buttons. Confirm action buttons are aligned to the right of the block. Follow Site administration > Pugins >Activity modules> URL and select "New window" option in "Available display options". Change URL resource "Display" option to "In new Window" and save. Ensure page looks as expected and you can still drag the block.