add logging of sent messages

[kapil1garg]

in each of the feedbackFunctions, would be useful for debugging to know what messages were actually sent. Probably can instrument the sendSlackMessageToProjectChannel, sendSlackMessageToSigChannel, and sendSlackMessageToPeople functions.

Simple data structure:

// MessageLogSchema
{
  timestamp: Date as String // time when message was sent
  target {
    type: project|sig|people,
    projectName: String // project name if type is project; optional
    sigName: String // SIG name if type is SIG; optional
    people: String[] // list of people message was sent to if type is people; optional
  }
  message: String // message that was sent
  error: Object as String // error if happens
}

[kapil1garg]

801eb35 tried to add this, but I kept hitting a ReferenceError: MessageLog is not defined when adding it to the feedback functions. I added it to the postToStudioAPI function for now, but that doesn't listen for any errors in the request.

some options:

• add a try, catch to postToStudioAPI to listen for any errors there and capture that
• get the ExecutionEnv to accept MessageLog somehow. Might need to include Mongoose (seems like I use this. to refer to the studio API call)

[kapil1garg]

Need to add this to all message functions -- only in message a list of people right now