Empty scripts, comments and search lists

Some users don't have any scripts yet, but an empty sorting table is shown.
Some users don't have any comments yet, but a pager is shown.
When search yield no results, an empty sorting table is shown.

This PR will add an message saying that this user doesn't have any scripts/comments yet, filling up the empty space. Also a message when there are no search results (scripts, libraries & users).
https://github.com/OpenUserJs/OpenUserJS.org/blob/master/views/pages/scriptListPage.html#L17 This file isn't only used here: https://github.com/OpenUserJs/OpenUserJS.org/blob/master/views/pages/userScriptListPage.html#L16 This include should be usuable for any situtation, and since we've already ~5 different, we should move this message into the controller.