Merge pull request #4 from geonetwork/master

Pull request to synch with geonetwork/core-geonetwork repository
Merge pull request #6 from geonetwork/master

Update to master
Merge remote-tracking branch 'upstream/develop' into develop
Merge remote-tracking branch 'geonetwork/develop' into develop
Merge branch 'develop' of https://github.com/josegar74/core-geonetwork into develop
Merge remote-tracking branch 'gn/develop' into develop
Merge remote-tracking branch 'gn/develop' into develop
Merge remote-tracking branch 'geonetwork/develop' into develop
#476 Print to pdf metadata selection using only lucene index information
Merge pull request #478 from josegar74/pdf-from-lucene-index

#476  Print to pdf metadata selection using only lucene index information
Don't display the action if only one group in the catalog.
Avoid JS error when paginationInfo is not defined. Add a default one. Do not trigger search if no facets defined.
Merge remote-tracking branch 'upstream/develop' into develop