Default value of this option will be $.uls.data.autonyms().
It can be set to limit language selection to a set of languages.
Updated examples, used a config variable wgULSLanguages to set this.
Change-Id: Ia322cbdcdb14f08619d2e4df5b23e2702841d147
Extend $.fn.uls render method to add additional rendering of display
settings link.
Add css for the new element.
Add display.png icon from the Agora icon set.
Change-Id: I7a29b4892be02526969b0dd786c74bdb7551c074
