Fixes #2278

Instead of instantly applying the translations, add them to an array.
That way users can include the language files that their site supports
and apply the required language using $.extend($.fn.select2.defaults,
$.fn.select2.locales["nl"]);
Immediately apply language when including
Syntax fix
Remaining syntax + indentation
Added some missing ;
Fix da language apply
Merge pull request #2285 from kows/4.0-wip

Fixes #2278