GH198 - Workbench context menu ported to the new CM

Also the actions ported to the new ActionBase
GH198 - Removed a reference to the old ContextMenuManager
GH198 - Merge remote-tracking branch
'origin/GH198-TabRightClikMenuUsingCM'

Conflicts:
	org.flowerplatform.flexutil_legacy/src/com/crispico/flower/util/layout/Workbench.as
GH198 - Merge remote-tracking branch 'origin/master'

Conflicts:
	org.flowerplatform.flexutil_legacy/src/com/crispico/flower/util/layout/Workbench.as