BS-6601
Add a validator to avoid falling in this case.
An input can be bpund to one widget only

Conflicts:
	bundles/plugins/org.bonitasoft.studio.connectors.model.edit/messages.properties
BS-6601
Add a validator to avoid falling in this case.
An input can be bpund to one widget only
Remove call to ResourcePlugin
Improve monitor for splash screen

Conflicts:
	bundles/plugins/org.bonitasoft.studio.common.repository/messages.properties
BS-922
Add a feedback to indicate that moving outside the pool up or left will
not increase pool size.

Avoid figure collision when arranging new position

Conflicts:
	bundles/plugins/org.bonitasoft.studio.diagram.custom/src/org/bonitasoft/studio/diagram/custom/editPolicies/CustomFeedbackXYLayoutPolicy.java