optimize a bit the image

100 quality !!!!
Merge branch 'master' into prod
Banner Diamir Scout 11
https+geoportail
geoportail+https
Banner Camp B
use relative url for metaengine outings retrieval on home
Merge branch 'prod' of https://github.com/c2corg/camptocamp.org into prod
Merge branch 'master' into prod
Merge branch 'master' into prod
i18n
Merge branch 'prod'
add filename in json images lists=
forums referer check and https
https redirection in rememberFilter