Added utility methods
Added code to pass xmpp message attributes to the abstract event
Added track icon
Added code to clean popus on map when deleting vector features
Merge branch '1.6.x' of https://github.com/geosdi/geo-platform into 1.6.x
Merge branch '1.6.x' of https://github.com/geosdi/geo-platform into 1.6.x