As a multi-lingual user I want to be able to change article languages quickly.
**Acceptance criteria**
* Add language icon to toolbar
* List is shown as "Language name" (in native language) and below "Article title" (in native language)
* Initial number of links are shortened when the list is longer than 6 items. If that happens, only 3 items are shown initially.
* The initial languages are decided based on the previous user selections (stored on a cookie), browser language info, and geo-ip information
* If there are more than 20 languages, organize the list by region. Include "Common languages" and "Worldwide" before regions
* Region titles are shown in the current language
**Prototype**
http://invis.io/5R2WGRGXM
**Design**
Languages
{F161101}
More
{F161103}