Bug 497015 - History view not displayed if server is remote and FileBasedChangePackages are used * Enable lazy loading * Enable via extension point or system property Change-Id: I23795d0a6d3d586d8090d9abffa4ad5fbabd8d0d Author: Markus Barchfeld <markus.barchfeld@gmxde> Signed-off-by: Markus Barchfeld <markus.barchfeld@gmx.de> [initial API and implementation]