Merge branch '2.8.x' into exportAcl

.codeclimate.yml

.csslintrc

.eslintignore

.eslintrc

Jenkinsfile

behat.yml

composer.json

cron/centreon-backup-mysql.sh

doc/en/configuration_guide/timeperiod.rst

doc/en/release_notes/centreon-2.8/centreon-2.8.12.rst

doc/en/release_notes/centreon-2.8/centreon-2.8.13.rst

doc/en/release_notes/centreon-2.8/index.rst

doc/fr/configuration_guide/timeperiod.rst

doc/fr/release_notes/centreon-2.8/centreon-2.8.12.rst

doc/fr/release_notes/centreon-2.8/centreon-2.8.13.rst

doc/fr/release_notes/centreon-2.8/index.rst

features/ConnectorConfiguration.feature

features/FirstNotificationDelay.feature

features/HostGroupDependencyConfiguration.feature

features/HostTemplateBasicsOperations.feature