Update translator documentation.

Whitespace updates.
i18n/L10n updates.

plugins/SearchSub/searchsubtrackingcommand.php

@@ -20,8 +20,12 @@ class SearchSubTrackingCommand extends Command
             $list[] = $all->search;
         }
 
+        // TRANS: Separator for list of tracked searches.
+        $separator = _m('SEPARATOR','", "');
+
         // TRANS: Message given having disabled all search subscriptions with 'track off'.
-        $channel->output($cur, sprintf(_m('You are tracking searches for: %s'),
-                                       '"' . implode('", "', $list) . '"'));
+        // TRANS: %s is a list of searches. Separator default is '", "'.
+        $channel->output($cur, sprintf(_m('You are tracking searches for: "%s".'),
+                                       implode($separator, $list)));
     }
-}
+}