Correct logic to avoid 'undefined' label style being inserted.
Fix two trivial HTML bugs.
Reuse vm context to speed up Function nodes

If the NODE_RED_FUNCTION_TIME environment variable is set, the
function nodes publish a status of how long the function took
to run, in ms.
HTTP In delete configuration missing errorHandler
Fixes #384
Check to see serialport exists before opening in Arduino node
Fixes #382

now warns if chosen serial port doesn't exist - rather than crashing.
So is now recoverable without manually editing flows.

(Also moved to fa-icons and Arduino category)
Delay node drop immediate not working
Fixes #381
Merge pull request #380 from hindessm/trivial-html-fixes

Fix two trivial HTML bugs.
Merge pull request #379 from hindessm/fix-undefined-class-on-labels

Correct logic to avoid 'undefined' label style being inserted.
Tweak info of watch and file nodes to be more style consistent with others.
set defaults in trigger node rather than confusing placeholders
make tcp and udp node fa icons more consistent
Indent range node UI more in style with other nodes.
Migrate to fa icons.