2.16.3: Maintenance Release

Enhancements

• If template has height -1 then set it to 0 height (test for custom templates).
• Add wrap value feature to numeric node.

Fixes

• Ensure widgets handle undefined msg parts for labels etc.
• Fix scrollbar theming inside template.
• Ensure msg.topic really doesn't exist if not specified, for all ui nodes. Was PR #531
• Backlevel less package to fix IE11 loading, Issue #530