Change script location.

Split js code.
Added cache and changed loading mechanism for js sources.

script/entities/graph/api/index.js

@@ -0,0 +1,11 @@
+
+{
+let modulDir = "entities/graph/";
+
+doInclude ([
+    include ("shared/point.js"),
+    include ("entities/edge/api/index.js"),
+    include ("entities/vertex/api/index.js"),
+    include ("model/Graph.js", modulDir)
+])
+}