Update fonts.php

'Http:' prefix in url cause Google Fonts fault when whole moodle site is accessed through https. This modification resolves it - now it works both through http or https.
Merge pull request #292 from PiotrNawrot/master

Google Fonts through https FIX.
Update README.txt for #292.
Update pre-release version and maturity.
Fix #294.
Fix #295.
Fix #296.
Fix navigation menu open colour.
Consistent form save buttons background.
Scrollbars.
Merge remote-tracking branch 'upstream/master'