Localize "an error occurred" in r.ui.Form.

r2/r2/lib/strings.py

@@ -188,6 +188,7 @@ Note: there are a couple of places outside of your subreddit where someone can c
     go = _("go"),
     view_subreddit_traffic = _("view subreddit traffic"),
 
+    an_error_occurred = _("an error occurred"),
 )
 
 class StringHandler(object):

r2/r2/public/static/js/ui.js

@@ -141,6 +141,6 @@ r.ui.Form.prototype = $.extend(new r.ui.Base(), {
     },
 
     _handleNetError: function(result, err, xhr) {
-        this.showStatus('an error occurred (' + xhr.status + ')', true)
+        this.showStatus(r.strings.an_error_occurred + ' (' + xhr.status + ')', true)
     }
 })