Custom Rankings - Allow customized list views

[malexmave]

When doing a list-based comparison, it should be possible for the list creator to specify a default ranking scheme, and to modify which columns are displayed in the list. Possibilities:

• Pull information from detailed checks directly into the table (i.e., number of 3rd parties, presence of Google Analytics, ...)
• Hide specific categories ("I don't care about security headers")
• ...