ZODB Components: Likewise errors, kept source code warnings dialog opens (maximize/fullscreen).
ZODB Components: ID and Reference may be quite long so make fields wider in Component_view.
Ace Editor: Import the entire source code.
ZODB Components: Export only the last Workflow History.

Only the source code and the last workflow history is actually relevant, so
remove all Workflow History except the last one to minimize diffs.

This adds a property to BusinessTemplate for generic behavior, overriden for
ZODB Components to ignore all Workflows except component_validation_workflow.