Merging 2.3 changes with head LDEV-2216 Changing handling of markerinfo and marker title to not use the javascript ecape() function as it was screwing up non ASCII (greek) characters
LDEV2232 setting gmap marker gmapSession to null on export content to prevent potential errors on import
LDEV-1911 Making Gmap tool have its own config page for the gmap API key, istead of putting it in the general lams configuration page. This is the web stuff to make the config model possible