Changing internal and external
"http://" links to the more secure "https://"
where https is available,
even to avoid some redirections.
Cleanup of source file(s) included.
Change-Id: Ica52ea5910bd439fe9cd295c40f7947083b65d6b
Reviewed-on: https://gerrit.libreoffice.org/62897
Tested-by: Jenkins
Reviewed-by: Olivier Hallot <olivier.hallot@libreoffice.org>