Atto multilanguage plugin
The aim of this plugin is to facilitate the creation of multilingual content, forgetting the awkward method present from many versions ago.
There is an existing plugin that makes this easier, developed by Iñaki Arenaza, but only for TinyMCE editor. So, we have found necessary a plugin for the default editor of Moodle to perform this task.
The implementation of this plugin has been based on the mentioned TinyMCE plugin, using also Iñaki's other plugin, the multilang2 filter.
Above mentioned Iñaki Arenaza's filter_multilang2 is required.