Extend i18n to support initializing packs
Extend i18n to support initializing packs

Sometimes a pack will need to modify it's environment when it's loaded.

This calls the initialize() function (if it's present),
on a pack when it set as the default.

Teino1978-Corp/Teino1978-Corp-documentcloud,moodpo/documentcloud,dannguyen/documentcloud,documentcloud/documentcloud,Teino1978-Corp/Teino1978-Corp-documentcloud,roberttdev/dactyl4,gunjanmodi/documentcloud,moodpo/documentcloud,moodpo/documentcloud,dannguyen/documentcloud,roberttdev/dactyl4,dannguyen/documentcloud,ivarvong/documentcloud,documentcloud/documentcloud,roberttdev/dactyl4,Teino1978-Corp/Teino1978-Corp-documentcloud,gunjanmodi/documentcloud,moodpo/documentcloud,documentcloud/documentcloud,ivarvong/documentcloud,documentcloud/documentcloud,gunjanmodi/documentcloud,gunjanmodi/documentcloud,ivarvong/documentcloud,monofox/documentcloud,dannguyen/documentcloud,ivarvong/documentcloud,monofox/documentcloud,monofox/documentcloud,roberttdev/dactyl4,monofox/documentcloud,Teino1978-Corp/Teino1978-Corp-documentcloud