…up to select by default

* Preferred group & template / resourceType is always an array

See https://github.com/titellus/core-geonetwork/blob/4.0.x/core/src/main/java/org/fao/geonet/kernel/search/EsSearchManager.java#L526.

* Preferred group & template / Get setting value from gnConfig.

* Preferred group & template / GroupComboo directive no use a standard ng-options so the model is a group object and we update groupOwner with the id of the currently selected model group. By default, if ownerGroup set, select it among the list of groups, if not select the first one.

* Preferred group & template / Fix for portal group config.

* Preferred group & template / Set default group in directory and import panel.