header.tpl: Move scripts and stylesheets into the head
header.tpl: Move scripts and stylesheets into the head

Validation fix:
Scripts and stylesheet references generally belong in the header.

Signed-off-by: John Snow <624c376396b1be97fa9f2557aab38fb7d8603d8b@redhat.com>

famz/patchew,patchew-project/patchew,pvital/patchew,famz/patchew,pvital/patchew,patchew-project/patchew,famz/patchew,famz/patchew,pvital/patchew,patchew-project/patchew,pvital/patchew,patchew-project/patchew