alfred.py: use gzip (requires alfred-json v0.2)
alfred.py: use gzip (requires alfred-json v0.2)

(cherry picked from commit 263dd4ceff65c40d90b7f40937986bf3612d8f45)
Signed-off-by: Alexander Dahl <60c6d277a8bd81de7fdde19201bf9c58a3df08f4@netz39.de>

FreifunkMD/ffmap-backend,FreifunkMD/ffmap-backend