Private Messaging Feature

[maddy2101]

Purpose: Botty deliveres messages from one user to another, when the recipient is online.

Proposal:
/msg @botty tell @olly about forge:12345
/msg @botty tell @olly about review:12345

that makes the bot post a private message to the recipient, telling him his attention is required for the given forge- or gerrit address. If the user is currently away, the message will be delivered when the user comes back online.

[NeoBlack]

the new feature is now in testing phase. before merge into master and roll out on LIVE, the new feature must be documented in the wiki.