Added suporters

docs/img/supporters/200px-Supporter-eventinfra.png

docs/img/supporters/babiel.png

docs/img/supporters/bcix.png

docs/img/supporters/community-ix.png

docs/img/supporters/ediscom.png

docs/img/supporters/eventinfra.png

docs/img/supporters/flexoptix.png

docs/img/supporters/telekom.png

docs/network.md