message: Use id instead of channel slug
diff: @@ -110,7 +110,7 @@ module.exports = class MarkletView extends Backbone.View
  save: ->
  val = @dom.input.val()?.trim() or @model.get('content')
  - data = channel_ids: @connections.pluck 'slug'
  + data = channel_ids: @connections.pluck 'id'
  data[if (isURL(val) or isDataURI(val)) then 'source' else 'content'] = val
  data = extend {}, data, QUERY
  