[FIXED JENKINS-19586] Change description of 'tied' node mode

Pulling doChildrenContextMenu up from AbstractProject into Job, since the latter already defines permalinks.

Deprecating AbstractProject.ABORT, since it is simply Item.CANCEL anyway, and better documenting this permission and its usage.

Fix typo in Czech (cs) localization.

Cannot seem to move war/src/main/webapp/help/user/*.html since there is no Descriptor to bind doHelp to.

Conflicts:
	core/src/main/java/hudson/util/ChartUtil.java

Add compatibility for SCMTriggerItem-related changes in 1.568