LPS-49178 Support cover image in blog entries

Just small SF here:
the curly bracket should be on new line. You may try to run check-source-formatting tool. It will show you the issue:
"Line: 184 These arguments should each be on their own line: var dd = new A.DD.Drag({".
Also, it has option to fix some SF issues (via -i argument, like check_sf -i file_here).