API CHANGE Changed Translatable datamodel to use locales ("en_US") instead of lang values ("en).
API CHANGE Changed Translatable::$default_lang to $default_locale, Translatable::$reading_lang to $reading_locale
API CHANGE Using "locale" instead of "lang" in Translatable::choose_site_lang() to auto-detect language from cookies or GET parameters
API CHANGE Deprecated Translatable::is_default_lang(), set_default_lang(), get_default_lang(), current_lang(), set_reading_lang(), get_reading_lang(), get_by_lang(), get_one_by_lang()
API CHANGE Removed Translatable::get_original() - with the new "translation groups" concept there no longer is an original for a translation
BUGFIX Updated MigrateTranslatableTask to new Locale based datamodel
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@73468 467b73ca-7a2a-4603-9d3b-597d59a354a9
BUGFIX: Fix translatable migration not writing records to Live properly
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@70080 467b73ca-7a2a-4603-9d3b-597d59a354a9
