able sort issues

conf/locale/locale_en-US.ini

@@ -400,6 +400,13 @@ issues.filter_type.all_issues = All issues
 issues.filter_type.assigned_to_you = Assigned to you
 issues.filter_type.created_by_you = Created by you
 issues.filter_type.mentioning_you = Mentioning you
+issues.filter_sort = Sort
+issues.filter_sort.latest = Latest
+issues.filter_sort.oldest = Oldest
+issues.filter_sort.recentupdate = Recent updated
+issues.filter_sort.leastupdate = Least updated
+issues.filter_sort.mostcomment = Most comments
+issues.filter_sort.leastcomment = Least comments
 issues.opened_by = opened %[1]s by <a href="/%[2]s">%[2]s</a>
 issues.opened_by_fake = opened %[1]s by %[2]s
 issues.previous = Previous