Add support for custom table pagination size

New customization button opens dialog with field for setting the number of lines
in tables. After saving the new value there is new topic which starts refreshing
current table facet (if shown) and set all other facets expired. Therefore all
tables are immediately regenerated.

https://fedorahosted.org/freeipa/ticket/5742

Reviewed-By: Petr Vobornik <pvoborni@redhat.com>

ipaserver/plugins/internal.py

@@ -250,6 +250,10 @@ class i18n_messages(Command):
             "update": _("Update"),
             "view": _("View"),
         },
+        "customization": {
+            "customization": _("Customization"),
+            "table_pagination": _("Pagination Size"),
+        },
         "details": {
             "collapse_all": _("Collapse All"),
             "expand_all": _("Expand All"),