Kraken: Labels now have a size of 10
Stat_persistor: better handling of errors in config
Kraken: fix re-init of labels
Merge pull request #340 from l-vincent-l/fix_reassign

Kraken: Labels now have a size of 10
Stat_persistor: Let python handle exceptions
Stat_persistor: add a setup.py file
Debian: add navitia-statpersistor.install
Debian: add stat_persistor in debian/control
Stat_persistor: remove useless dependency
Stat_persistor: Don't import all the google packages
Merge pull request #341 from l-vincent-l/handle_errors_config_stats

Stat_persistor: better handling of errors in config
Debian: install of stat_persistor
Merge pull request #342 from l-vincent-l/install_stat_persistor

Install stat persistor