Julian Sparber authored Mar 20, 2020 and Julian Sparber committed Mar 26, 2020

This fixes this two issues:
- Emit the events origin-removed, origin-added when required.

- Remove call immediately when disconnected and emit events:
  By using `g_idle_add ()` we can't be sure when the call is actually
  removed and could stay potentionaly for evere, as long the main loop is
  busy. This can lead to unexpected behavior. If the calls shouldn't be
  freed then it's required to increase the ref count. This is similar how
  the `remove` event works in a `GtkContainer`.