close input stream
BS-2861
Fix validation rules :
distinct removed inputs from new mandatory inputs.
Fix messages.

Conflicts:
	bundles/plugins/org.bonitasoft.studio.connectors.model.edit/messages.properties
	bundles/plugins/org.bonitasoft.studio.connectors/messages.properties
	bundles/plugins/org.bonitasoft.studio.validation/src-test/java/org/bonitasoft/studio/validation/constraints/process/ConnectorDefinitionAndConfigurationInputConsistencyConstraintTest.java