changed external_id in PhenotypeCallSummary hibernate object so that its
an Integer and can be set to null so that test passes
created a method in PipelineDao getProcedureByStableId for IMPC data
like we did for getParameterByStableId where we need a method without
versions as these fail for IMPC data as we don't have the version info
in the xml???
Merge branch 'master' of https://github.com/mpi2/PhenotypeArchive.git