Corrected wrong types in data records for cooling tower and boiler.
Added missing extend statement.
Fixed issue #158, removed flow attribute for radiosity connectors to comply with the Modelica Language Standard.
Revised model due to new radiosity connectors. (Issue #158)
Revised model due to new radiosity connectors. (Issue #158)
Updated reference results due to new radiosity connectors. (Issue #158)
Merge pull request #159 from lbl-srg/master

merge new radiosity connectors to openmodelica branch