Finalize v4 update

[nilbus]

This branch is based on #114 frodrigo:v4, with two fixes:

1. Fix rake update-select2 to work with the new v4 files and locales
2. Update locale assets via rake update-select2

I have tested this branch in a real app, and it works great.
Things are simpler now that v4 has no images.

@frodrigo set the version number to 4.0.0, but feel free to change to 4.0.0.0 if you
think that will be more consistent.

[nilbus]

@simi @argerim Will it be possible for you to test and release this today or this week? If anything needs to be done to make this happen, I will be glad to assist.

[nilbus]

@simi I saw you self-assigned this. Any feedback?

[simi]

Sure. But I need to finish review first. This is huge change.

[nilbus]

Thanks :)

[nilbus]

@simi How's it looking? Any progress this week?

[gomayonqui]

Any plans to merge this soon? 😃

[gomayonqui]

I'm using @nilbus fork and it works pretty good. Any reason this haven't been merge yet?

[nilbus]

@simi One less-arduous way you might approach this review is to:

1. Inspect the updated rake task to verify you think it does the right thing.
2. Run the rake task, and verify that it updates the files in the same way that were committed.

[erkaun]

I don't have any suggestions for streamlining what looks like a ton of review work, but just wanted to mention that I've had great results with this so far, and would like this released even more than I'd like a large block of cheese. And I love cheese.

[simi]

It is merged into master. Thanks for your patience and work! I try to release ASAP, but I have not permission for that. Stay tuned.

[nilbus]

@simi Thank you for the review!

[erkaun]

@argerim, do you have an estimate on when this update to master will be released?

[simi]

@erkaun it is out.

[nilbus]

Thanks @simi for working to make this happen! 🏁

[erkaun]

Thanks @simi and @nilbus! This is very much appreciated.