Updated font "Bree Serif" in theme default to properly display extended
latin and cyrillic characters. Added support for greek characters.
Since "Bree Serif" is licensed under SIL OFL license which does not allow
the redistribution of derivative versions without wholesale name changes
inside and out of the font, it was renamed to "Breeze Serif".

Updated font "Oswald" in theme ocean by adding support for greek characters.
Since "Oswald" is licensed under SIL OFL license which does not allow the
redistribution of derivative versions without wholesale name changes inside
and out of the font, it was renamed to "Osvaldo".

behatnotneeded
Change-Id: I205689fbaca8fabcad2db20fe99cd4edcdc448fa
Signed-off-by: Gregor Anzelj <gregor.anzelj@gmail.com>