Add "to Telemetry" to send

[gregglind]

at: https://github.com/raymak/contextualfeaturerecommender/blob/master/phase2/addon/lib/sender.js#L145

needs:

• new pref setting
• call telemetry controller per https://github.com/gregglind/shield-studies-addon-utils/blob/master/lib/index.js#L55