Improvements to BlinkStick node

* Ability to select BlinkStick by serial number
* Look up serial numbers of connected BlinkSticks
* Ability to set blink, morph and pulse animations
* Ability to control the parameters of those animations like duration,
* steps, repeats and delay
* Repeat blink and pulse animation until new payload is received
* Automatically find BlinkStick if it was removed and then plugged back in
* Connectivity status when "Node Status" is enabled in the menu
* Override parameters with payload object
* Improved text in the info pane
Merge pull request #73 from arvydas/master

New features for BlinkStick node
includes animations and other cool features
Thanks @arvydas