disable overview map
i18n
use carto css as sass files for easy building

note that we should do the same with app.css but one css file from gxp has an incorrect syntax for msie opacity filter
so that it is not possible yet. (pull request made)
remove extra comma
fr fallback is unnecessary since it is already there in c2corg.base.init function
clean file
use correct i18n function
some carto css improvements
carto css improvements
carto css improvements
Merge branch 'import-carto2013' of https://github.com/c2corg/camptocamp.org into import-carto2013