Merge remote-tracking branch 'upstream/integration' into proto

* upstream/integration:
  FIX: Accept also urls with groups/setup for static paths. Closes #21
ConfigurationManager dev: introducing websockets
ConfigurationManager dev
ConfigurationManager dev
ConfigurationManager dev; core fixes
ConfigurationManager dev
Merge remote-tracking branch 'upstream/integration' into proto

* upstream/integration:
ConfigurationManager dev
ConfigurationManager dev
ConfigurationManager dev.
ConfigurationManager dev
ConfigurationManager dev; root fixes (changin the group and setup handle)
Merge remote-tracking branch 'upstream/integration' into proto

* upstream/integration:
  Added properties by hand
ConfigurationManager dev
ConfigurationManager dev; MetadataCatalog init dev
MetadataCatalog dev
MetadataCatalog dev
MetadataCatalog dev
MetadataCatalog dev; ConfigurationManager dev
MetadataCatalog dev; ConfigurationManager dev;