Prevent 'about:' protocol in _publisherTagUrl (#1170)

* handle pubmatic targeting key value pairs if in DFP GPT format

* hardcoded pubmatic request to https as protocol-less url prevents chrome req from injected iframe

* add newline for consistency

* specifically check for http prot, fall back to https in crit adapter

* added spaces to pass eslint #1170

* removed blank line refs PR #1170

src/adapters/criteo.js

@@ -3,7 +3,8 @@ var bidmanager = require('../bidmanager.js');
 var adloader = require('../adloader');
 
 var CriteoAdapter = function CriteoAdapter() {
-  var _publisherTagUrl = window.location.protocol + '//static.criteo.net/js/ld/publishertag.js';
+  var sProt = (window.location.protocol === 'http:') ? 'http:' : 'https:';
+  var _publisherTagUrl = sProt + '//static.criteo.net/js/ld/publishertag.js';
   var _bidderCode = 'criteo';
   var _profileId = 125;