Add in urlTemplate support of variables {z}, {x} and {0} interpreted like {0}, {1} and {2}.

Before now these variables were supported in some cases. Now they are supported always in both .metainso and sqlitedb.
No support in beanshell!

OsmAnd-java/src/net/osmand/map/TileSourceManager.java

@@ -487,6 +487,7 @@ public class TileSourceManager {
 		if (name == null || (urlTemplate == null && !ignoreTemplate)) {
 			return null;
 		}
+		//As I see, here is no changes to urlTemplate  
 		//if(urlTemplate != null){
 			//urlTemplate.replace("${x}", "{1}").replace("${y}", "{2}").replace("${z}", "{0}");
 		//}