Fix wording of today stats, fixes #937

src/Packagist/WebBundle/Resources/translations/messages.en.yml

@@ -107,8 +107,8 @@ stats:
     installs: Installs
     overall: Overall
     lastmonth: Last 30 days
-    today: Today
-    since_midnight: "since midnight, UTC"
+    today: Last 24h
+    rolling_avg: "rolling average, approximation"
     daily: Daily installs
     daily_per_version: Daily installs per version
     averaged: "averaged %avg%"

src/Packagist/WebBundle/Resources/views/package/stats.html.twig

@@ -36,7 +36,7 @@
                 </div>
                 <div class="col-md-4 col-xs-12">
                     <dl class="dl-horizontal">
-                        <dt class="font-normal">{{ 'stats.today'|trans }}<br><small>({{ 'stats.since_midnight'|trans }})</small></dt>
+                        <dt class="font-normal">{{ 'stats.today'|trans }}<br><small>({{ 'stats.rolling_avg'|trans }})</small></dt>
                         <dd class="font-normal">{{ downloads.daily|number_format(0, '.', '&#8201;')|raw }}</dd>
                     </dl>
                 </div>