introduce time column
http://forum.routeconverter.com/thread-1670.html

Conflicts:
	route-converter/src/main/java/slash/navigation/converter/gui/helpers/MapViewCallbackImpl.java
	route-converter/src/main/java/slash/navigation/converter/gui/helpers/PositionHelper.java
	route-converter/src/main/java/slash/navigation/converter/gui/models/PositionsModelImpl.java
	route-converter/src/main/java/slash/navigation/converter/gui/models/PositionsTableColumnModel.java
	route-converter/src/main/resources/slash/navigation/converter/gui/RouteConverter_es.properties
	route-converter/src/main/resources/slash/navigation/converter/gui/RouteConverter_it.properties
like in SwingMapViewer
support metric, statute, nautic system for map scale bar