SyncBot: Emit discourse whispers under the syncbot account
SyncBot: Emit discourse whispers under the syncbot account

This is to stem the tide of Resineers that we need to promote to Discourse moderators, which is approaching an expensive threshold.

* Toggle the account used based on whether the message is a whisper
* Prefix whisper text sent with the context of who whispered
* Strip whisper text received of the context of who whispered
* No longer check for and reject non-moderator whispers

Change-Type: patch
Connects-to: #558
Signed-off-by: Andrew Lucas <00956f40b2dff5f919e8c50001ed0e3239d3f23e@resin.io>

resin-io-modules/resin-procbots,resin-io-modules/resin-procbots,resin-io-modules/resin-procbots