GUI - Fixed ONOS-300. Unpin now clears memento.
 - increased size of device icons to 36 (from 30).
 - cleaned up config.icons data, and removed unused code and .png files.

Change-Id: I7f3718db164363b75b395fc1af40493304642949
diff --git a/web/gui/src/main/webapp/json/ev/colors/ev_7_onos.json b/web/gui/src/main/webapp/json/ev/colors/ev_7_onos.json
index 6cce0cf..d382b7c 100644
--- a/web/gui/src/main/webapp/json/ev/colors/ev_7_onos.json
+++ b/web/gui/src/main/webapp/json/ev/colors/ev_7_onos.json
@@ -6,6 +6,7 @@
     "online": true,
     "master": "192.168.56.101",
     "labels": [
+      "",
       "sw-3",
       "0000ffffffff0003"
     ],