GUI -- Implemented Show/Hide Offline devices & Show/Hide Hosts (also used Flash Service).
- added 'toggle(cb)' to panel API.
- deferred keybindings to allow direct reference to sub-API functions.
- re-implemented tick() function.
- added 'list scenarios' command to mockserver.

Change-Id: I1cc0009266e1015747b1d8106bd1f088adb2feb5
diff --git a/web/gui/src/test/_karma/ev/simple/ev_8_addHost_03.json b/web/gui/src/test/_karma/ev/simple/ev_8_addHost_03.json
index 35e4572..fba7015 100644
--- a/web/gui/src/test/_karma/ev/simple/ev_8_addHost_03.json
+++ b/web/gui/src/test/_karma/ev/simple/ev_8_addHost_03.json
@@ -13,8 +13,8 @@
       "0E:2A:69:30:13:86"
     ],
     "metaUi": {
-      "x": 800,
-      "y": 180
+      "Xx": 800,
+      "Xy": 180
     },
     "props": {}
   }