webui: enable ngCSP

ngCSP allows angular to avoid using inline style and unsafe eval
mechanisms.  Enabling this will allow us to update to a more stringent
content-security policy.

for more details, see documentation here:
https://docs.angularjs.org/api/ng/directive/ngCsp

Tested by:
Launching the GUI, and saw no ill effects.

Change-Id: I4db732e997c2901d1fe57eee99607007b5e3afec
Signed-off-by: Ed Tanous <ed.tanous@intel.com>
diff --git a/app/index.html b/app/index.html
index de38fb7..62ddfc5 100644
--- a/app/index.html
+++ b/app/index.html
@@ -1,5 +1,5 @@
 <!doctype html>
-<html ng-app="app" lang="en">
+<html ng-app="app" ng-csp lang="en">
 
 <head>
     <meta charset="UTF-8">
diff --git a/app/index.js b/app/index.js
index 4bb6a4c..645f315 100644
--- a/app/index.js
+++ b/app/index.js
@@ -6,7 +6,7 @@
  * @exports app/index
  *
  */
-
+import 'angular/angular-csp.css';
 import 'bootstrap/dist/css/bootstrap.css';
 
 import angular from 'angular';