Es 4 ivnets zip export

@maethu add zipexort for meetings

![bildschirmfoto 2014-05-23 um 13 22 02](https://cloud.githubusercontent.com/assets/557005/3066072/f778d882-e26c-11e3-9912-a2eea40d081b.png)

![bildschirmfoto 2014-05-23 um 13 22 11](https://cloud.githubusercontent.com/assets/557005/3066073/f7792a30-e26c-11e3-8a19-0c910bdac2e0.png)

![bildschirmfoto 2014-05-23 um 13 25 04](https://cloud.githubusercontent.com/assets/557005/3066075/f77c5b42-e26c-11e3-98f5-3b2b13bd0714.png)

![bildschirmfoto 2014-05-23 um 13 25 19](https://cloud.githubusercontent.com/assets/557005/3066074/f77934f8-e26c-11e3-89e5-c9078fc6150d.png)