Topo2: Added Friendly host names
JIRA: ONOS-6657

Also added css into the browsersync tasks within gulp

Change-Id: Ibcf342c89b8e1eae131f5cb3694e3632bc134534
diff --git a/tools/gui/gulp-tasks/dev-server/index.js b/tools/gui/gulp-tasks/dev-server/index.js
index 119c3f2..135ee9f 100644
--- a/tools/gui/gulp-tasks/dev-server/index.js
+++ b/tools/gui/gulp-tasks/dev-server/index.js
@@ -42,6 +42,7 @@
             ws: true,
             middleware: [
                 proxy(['**/*.js', '!/onos/ui/onos.js'], { target: 'http://localhost:8189' }),
+                proxy(['**/*.css'], { target: 'http://localhost:8189' }),
                 proxy('**/*.js.map', {
                     target: 'http://localhost:8189',
                     changeOrigin: true,