HMI update 4/16/2017

·      Added two new script commands.

JSONToHostPoints: Parses a JSON string and writes the values to the configured host points.

JSONToScriptGlobals: Parses a JSON string and writes the values to configured script global items.

·      Added two JSON configuration helpers to parse a JSON string and populate a script global section for runtime access.

·      Changed the MQTT string handler. The handler can save the MQTT payload to a script global, call the JSONToHostPoints script command, call the JSONToScriptGlobals script command or store the payload internally, for access via scripting.