Need to consider replaced white spaces in PDLServiceParameterHealthChecker. #6
a map(String, SingleParameter) is used to find the correspondence between ports and PDL parameters. The problem is that PDL parameters may contain spaces whereas ports dont (they are replaced by _
modified:   PDL-activity/src/main/java/org/purl/wf4ever/astrotaverna/pdl/PDLServiceParameterHealthChecker.java
Customize eplanation msn if a non pdl artifact is connected. #6
fix wrong comparation of UCDs. #6
non metadata for some fields doesn't necessarily imply an error in PDL. #6
During PDL metadata comparision, string values are converted to lower case. #5