refs #142 - change /help URL to /online-help to avoid conflict with
images
refs #142 - drill-down navigation is not recognized. Added allSnapshots
to ScreenEntityDesigntimeDefinition (not used), and avoid loading
outgoing snapshots to memory - used getActiveSnapshots instead
fixes #155 - add runtime support and adjust navigation rule and child
windows.
- Side affect is improvement in navigation recognition (all AS400
tests)