HPCC-12468 Belongs to superfile tab added

Add a tab that displays any superfiles that the subfile may belong to.
There can be multiple superfiles that a subfile can belong to so adding a tab
to show multiples if needed.

Signed-off by: Miguel Vazquez <miguel.vazquez@lexisnexis.com>
That may be a bit subtle, but since I agree that the tab name is too long, that will do. On the tab itself, it could say something above the list: for example: Belongs to the following Superfile(s):