Merge pull request #375 from hindessm/rename-red-utils

Rename RED.utils to RED.util
Add info to IRC node re RAW commands
fix merge email.js
Fix RPi node - gpio path as per @Croady suggestion
Tiny wrinkle (non critical) in httpin node
Allow TCP node option to break connections per message (and auto
reconnect) - eg for file trnasfer to indicate EOF.

Change to FA icons.
First pass at migrating icons.
Fix spinner code to fa icons.