MapStore integration for GN 2.10.x

* Hide GeoNetwork header
* Remove viewer in GeoNetwork pages
* Changes on `addWMSLayer` and `addWMSServerLayers` functions to integrate with MapStore
* Changes on default schemas iso19115 and iso19139
Merge pull request #2 from alediator/mapstore-2.10.x

MapStore integration for GN 2.10.x