Adding topology overlay support for the server-side topo layout app.

Also:
- parametrized access network layout in preparation for multiple variants
- removed WS authentication code temporarily until proper forced-logout is implemented
- updated STC warden environment (test only)

Change-Id: I0adbe60737828db79350e7eb2fc72cf313b78a28
diff --git a/apps/layout/src/main/resources/app/view/tlTopov/tlTopov.css b/apps/layout/src/main/resources/app/view/tlTopov/tlTopov.css
new file mode 100644
index 0000000..8aa18f6
--- /dev/null
+++ b/apps/layout/src/main/resources/app/view/tlTopov/tlTopov.css
@@ -0,0 +1,2 @@
+/* css for layout topology overlay  */
+