ONOS-4359: continued work on theming UI
- topo view: fixed vertical spacing (and interactions) of summary and details panels.
- added bbox() to panel API.

Change-Id: I84544cc558020582c95d33096b92ac5756e68628
(cherry picked from commit e8c54db)
diff --git a/web/gui/src/main/webapp/tests/app/fw/layer/panel-spec.js b/web/gui/src/main/webapp/tests/app/fw/layer/panel-spec.js
index 07a1b35..2c3efec 100644
--- a/web/gui/src/main/webapp/tests/app/fw/layer/panel-spec.js
+++ b/web/gui/src/main/webapp/tests/app/fw/layer/panel-spec.js
@@ -92,7 +92,7 @@
         var p = ps.createPanel('foo');
         expect(fs.areFunctions(p, [
             'show', 'hide', 'toggle', 'empty', 'append',
-            'width', 'height', 'isVisible', 'classed', 'el'
+            'width', 'height', 'bbox', 'isVisible', 'classed', 'el'
         ])).toBeTruthy();
     });