ONOS-2202 - GUI -- Moved flow, port, and group navigation buttons out of device details panel. Created tab-like behavior to switch between the three views when viewing any of them.

Change-Id: Ibc4291689e913a3537bd621e8e579f5e198ae5f2
diff --git a/web/gui/src/main/webapp/app/view/flow/flow.css b/web/gui/src/main/webapp/app/view/flow/flow.css
index b1fe49d..9aadffa 100644
--- a/web/gui/src/main/webapp/app/view/flow/flow.css
+++ b/web/gui/src/main/webapp/app/view/flow/flow.css
@@ -23,7 +23,21 @@
 }
 
 #ov-flow div.ctrl-btns {
-    width: 45px;
+    width: 240px;
+}
+
+.light #ov-flow .current-view use {
+    fill: white;
+}
+.dark #ov-flow .current-view use {
+    fill: #304860;
+}
+
+.light #ov-flow .current-view rect {
+    fill: deepskyblue;
+}
+.dark #ov-flow .current-view rect {
+    fill: #eee;
 }
 
 .light #ov-flow tr:nth-child(6n + 1),