Add i18n Support

[rcmurphy]

• Adds i18n support
• Makes some small grammatical / phrasing tweaks to existing messages.

[safwanrahman]

Thanks for the PR! But I was wondering if we should keep the .po file in package! I do not have any idea about localization in django package.

[rcmurphy]

My understanding is yes, we should check in the mo and po files, as the po files are what actually drive it... Otherwise you need to run django-admin compilemessages before starting.

[rcmurphy]

Gentle bump!

Here is an example of a larger project with both MO and PO files checked in.

[ahivert]

Yes the package should store po/mo files, you can check how Wagtail (django CMS) handle that.
https://github.com/wagtail/wagtail/tree/master/wagtail/locales/locale

To make this PR complete maybe we can add at least another language to have at least one example. I can do French one as I am going to need it :)

[mambasoft]

Hi, I'm also interested in this feature and can provide italian translations. Thanks!

[safwanrahman]

This looks good to me! Sorry it took so long to get it merged. I had some busy time last couple of months, so could not lookover the projects. Thanks @rcmurphy 💯🚀