eventSamenvatting voor dialogCommunicator

DialogCommunicator now handles the eventSamenvatting:

![screenshot from 2014-12-29 11 51 22](https://cloud.githubusercontent.com/assets/2464627/5568035/10d3ec18-8f51-11e4-89c5-76368635cbd9.png)

Sorry for the trailing space removal of `atom` again. I'll have to look into this next time...

I's a quick hack however. See last comment in issue #49 for a proposed alternative