BS-6939,BS-936,BS-7481
Fix pool/lane size issue after import.
Fix some validation issue

Conflicts:
	bundles/plugins/org.bonitasoft.studio.common/src/org/bonitasoft/studio/common/jface/databinding/validator/InputLengthValidator.java
	bundles/plugins/org.bonitasoft.studio.expression.editor.win32/.project
	bundles/plugins/org.bonitasoft.studio.importer/src/org/bonitasoft/studio/importer/bpmn/BPMNToProc.java
	bundles/plugins/org.bonitasoft.studio.importer/src/org/bonitasoft/studio/importer/builder/IProcBuilder.java
	bundles/plugins/org.bonitasoft.studio.jpdl/src/org/bonitasoft/studio/importer/jpdl/JBPM3ToProc.java
	bundles/plugins/org.bonitasoft.studio.properties/src/org/bonitasoft/studio/properties/sections/general/NameGridPropertySectionContribution.java
	bundles/plugins/org.bonitasoft.studio.validation/plugin.properties
	bundles/plugins/org.bonitasoft.studio.validation/src/org/bonitasoft/studio/validation/constraints/AbstractLiveValidationMarkerConstraint.java
	bundles/plugins/org.bonitasoft.studio.validation/src/org/bonitasoft/studio/validation/constraints/process/EmptyNameConstraint.java
	tests/org.bonitasoft.studio.exporter.tests/src/org/bonitasoft/studio/exporter/tests/bpmn/BPMNConnectorExportImportTest.java
	tests/org.bonitasoft.studio.exporter.tests/src/org/bonitasoft/studio/exporter/tests/bpmn/BPMNExportTests.java
	tests/org.bonitasoft.studio.exporter.tests/src/org/bonitasoft/studio/exporter/tests/bpmn/BPMNImportExportTest.java
BS-6939,BS-936,BS-7481
Clean remaining files after import in tests