[ticket/12646] Add data-f attribute to breadcrumb links

PHPBB3-12646
[ticket/12646] Changed index/home data attr & updated subsilver

PHPBB3-12646
[ticket/12646] Add check for navlinks.FORUM_ID

PHPBB3-12646
[ticket/12646] Changed to navlinks.MICRODATA

PHPBB3-12646
Merge pull request #2530 from PayBas/ticket/12646

[ticket/12646] Add data-# attribute to breadcrumb links

* PayBas/ticket/12646:
  [ticket/12646] Changed to navlinks.MICRODATA
  [ticket/12646] Add check for navlinks.FORUM_ID
  [ticket/12646] Changed index/home data attr & updated subsilver
  [ticket/12646] Add data-f attribute to breadcrumb links