CB-7133 fix up the tests for Android

- move the resources from /resources to /cdvtests/iab-resources
- change the url of the resources from absolute to relative
- explicitly set the background color of local.html to be white because it was inheriting black
- add the js to display the user-agent on the tests menu
- change the www.google.com URL from http to https to avoid an unexpected redirect

tests/plugin.xml

@@ -27,5 +27,5 @@
     <js-module src="tests.js" name="tests">
     </js-module>
 
-    <asset src="resources" target="resources" />
+    <asset src="resources" target="cdvtests/iab-resources" />
 </plugin>