settings/base.py: updated ck config to incl iframely public endpoint form embed_provider setting as default rm in new version
settings/base.py: updated ck config to incl iframely public endpoint form embed_provider setting as default rm in new version

liqd/a4-meinberlin,liqd/a4-meinberlin,liqd/a4-meinberlin,liqd/a4-meinberlin