Set OGC unknown URL instead of URN as xlink:href value of sampledFeature
Add published flag for series, default is true. If published flag is F = false, the GetObservation and GetDataAvailability responses does not contain any values of the series with published flag = false.
Add published flag to SQL scripts and add update scripts
Update version to 4.1.3
Merge pull request #159 from CarstenHollmann/feature/publish_flag_for_series

Add publish flag for series
Merge branch 'master' into develop
Add series published flag to SQL create scripts and add update statement to SQL update scripts