Add i18n-tasks and normalize translations

[afdev82]

This PR adds the i18n-tasks gem to check the translations and reorders them like how is already done in the solidus_i18n project.

In this way it's easier to contribute, because the translations are in the same position.

[afdev82]

I just run bundle exec i18n-tasks normalize inside the core directory

[tvdeyen]

This is great. Thanks.

[kennyadsl]

Thanks!

[kennyadsl]

@afdev82 Hey can you please rebase on master since in the meantime some en key changed? I think it could be easier to revert changes and re-run the script at this point since there are a lot of conflicts. Thanks!

[afdev82]

@kennyadsl yes, I will do it soon ;)

[afdev82]

maybe you could add bundle exec i18n-tasks health to the ci, we do the same for our projects and it's useful

[tvdeyen]

maybe you could add bundle exec i18n-tasks health to the ci, we do the same for our projects and it's useful

This is probably a good idea, but I don't know how this will impact the current state of translations. We might want to check the health first, fix all issues and than enable it.

[kennyadsl]

Thanks!