further work on IPG style implementation
Merge branch '2.10.3.0' of https://github.com/ESTAT/core-geonetwork.git into 2.10.3.0
Merge branch '2.10.3.0' of https://github.com/ESTAT/core-geonetwork.git into 2.10.3.0
Merge pull request #1 from ESTAT/ecas

Adding basic CAS support.
Merge branch '2.10.3.0' of https://github.com/ESTAT/core-geonetwork.git into 2.10.3.0
https://webgate.ec.europa.eu/CITnet/jira/browse/GISCOMETAP-60
Merge branch '2.10.3.0' into ecas

Conflicts:
	web-client/pom.xml