Less crap in data attributes

media/js/mkt/user_state.js

@@ -1,11 +1,12 @@
 (function() {
 
     define('state', [], function() {
+        var locale_list = z.body.data('locales').split(',');
         var sideEffects = {
             'language': function() {
                 // Upon refocus, if `navigator.language` has changed, then let's
                 // refresh the page to reset our cookies and get new localized content.
-                if (navigator.language.toLowerCase() in z.body.data('locales')) {
+                if (_.contains(locale_list, navigator.language.toLowerCase())) {
                     // TODO: If lang in querystring, then remove.
                     // TODO: Prompt with confirmation before reload.
                     window.location.reload();

mkt/templates/mkt/base_mobile.html

@@ -64,7 +64,7 @@
         data-collect-timings="{{ url('mkt.timing.record') }}:{{ collect_timings_percent }}"
         data-simulate-nav-pay="{{ settings.SIMULATE_NAV_PAY|json }}"
         data-page-type="{{ pagetype or 'leaf' }}"
-        data-locales="{{ settings.LANGUAGE_URL_MAP|json }}"
+        data-locales="{{ ','.join(settings.LANGUAGE_URL_MAP.keys()) }}"
         {% if not logged %}data-recaptcha="{{ settings.RECAPTCHA_PUBLIC_KEY }}"{% endif %}
         {% block bodyattrs %}{% endblock %}>