on Business Data for Contract

Conflicts:
	pom.xml
	translations/fr/org.bonitasoft.studio.validation.nl_fr/messages_fr.properties

BS-12468 update bdm guidance

BS-14187 enable deletion of bdm

Update guidance text of bdm help

When removing all Business objects from the bdm it now delete and
uninstall the BDM instead of having a validation error.

Update guidance text when updating a bdm

integrated in test suite on CI

integrated in test suite

integrated in test suite

Move classpath java version to 1.7

integrated in test suite

Bs 14002 custom connector not working v2

not working in Studio with a ClassNotFoundException

instead of using getChild to retrieve ConnectorImplFileStore, use of
getImplementationFileStore

not working in Studio with a ClassNotFoundException

test correction + refactoring

not working in Studio with a ClassNotFoundException

Revert "Fix/bs 14002 custom connector not working"