Documentation of adding translations for new event classes.

(Redmine issue: #6127, #6222)

doc/sphinx/_doclib/reporting.rst

@@ -264,9 +264,18 @@ to following steps:
    contains same data like in ``email.j2``. ``dafault_class`` contains name of default
    class that is set as ``default_event_class`` directive in ``/etc/mentat/core/reporting.json.conf``.
    ``is_authenticated`` contains information about user log in status to system.
-#. If you are using internationalization, execute locally on the server babel
-   command line utility to scan for new messages, provide translations and compile
-   message catalogs.
 
-   TODO: This step requires implementation of locally available makefile, coming
-   soon.
+Following steps are required if you are using internationalization and are
+also required if you are adding new language:
+
+#. If you are adding classes in git repository, change working directory to its root,
+   or if you are adding in installed instance, change directory to folder with
+   your hawat installation. If you changed default installation paths, you also
+   need to change them in Makefile.
+#. Run ``make cpybabel-init INIT_LOCALE=lc`` where lc is code of your locales.
+#. Add translations to ``<git_root>/conf/event_classes/<class_name>/translations/<lc>/LC_MESSAGES/messages.po``
+   or ``/etc/mentat/event_classes/<class_name>/translations/<lc>/LC_MESSAGES/messages.po``.
+#. Run ``make cpybabel-compile``. Restart your hawat instance if you are adding
+   to installed system.
+#. If you changed data for existing event class run ``make cpybabel-update``, update
+   your ``messages.po`` file and run ``make cpybabel-compile``.