Uber simple language selector for allowing individual users to custom pick which language they choose to use the WordPress admin panel in.

Download Language Selector version 1.1

Potential additions: Ability to translate the front-end admin bar.
Bug fix needed: Doesn’t work on single site.

Bug fix needed: Can no longer edit the site language when plugin is activated. Line 307 wp-admin/options-general.php is where the issue lies.

Credits: Ze – for providing assistance with language specific functions

A similarly helpful plugin for adding new languages direct from GlotPress …. https://github.com/stas/localize