Make the error page more informative, and include platform information.

modules/gallery/views/error_admin.html.php

@@ -102,6 +102,10 @@
       .number {
         padding-right: 1em;
       }
+
+      #g-platform h2 {
+        font-size: 1.1em;
+      }
     </style>
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
     <title><?= t("Something went wrong!") ?></title>
@@ -144,6 +148,17 @@ function koggle(elem) {
       <h2>
         <?= t("Hey wait, you're an admin!  We can tell you stuff.") ?>
       </h2>
+      <p>
+        There's an error message below and you can find more details
+        in gallery3/var/logs (look for the file with the most recent
+        date on it).  Stuck?  Stop by the <a href="http://gallery.menalto.com/forum/96">Gallery 3
+        Forums</a> and ask for help.  You can also look at our list
+        of <a href="http://sourceforge.net/apps/trac/gallery/roadmap">open
+        tickets</a> to see if the problem you're seeing has been
+        reported.  If you post a request, here's some useful
+        information to include: <?  @$block =
+        gallery_block::get("platform_info"); @print $block; ?>
+      </p>
       <div id="kohana_error">
         <h3>
           <span class="type">