base,core: move RoundingModel to erp5_core

Some other documents from erp5_core import it, this can not be in
erp5_base

bt5/erp5_base/bt/template_document_id_list

@@ -39,7 +39,6 @@ document.erp5.QuantitySignMovementGroup
 document.erp5.RequirementMovementGroup
 document.erp5.RoleDefinition
 document.erp5.RootAppliedRuleCausalityMovementGroup
-document.erp5.RoundingModel
 document.erp5.SimulatedDeliveryBuilder
 document.erp5.SplitMovementGroup
 document.erp5.Supply

bt5/erp5_base/bt/template_keep_path_list

+portal_components/document.erp5.RoundingModel
 portal_introspections
 portal_memcached/persistent_memcached_plugin
 portal_solver_processes

product/ERP5/bootstrap/erp5_core/bt/template_document_id_list

@@ -31,6 +31,7 @@ document.erp5.Path
 document.erp5.PredicateGroup
 document.erp5.PredicateMatrix
 document.erp5.Project
+document.erp5.RoundingModel
 document.erp5.ScriptConstraint
 document.erp5.SimulationMovement
 document.erp5.TextDocument
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