Include Brazilian Portuguese (pt-br) and Portugual Portuguese (pt-pt)

Months ago I put much effort translating the strings into Portuguese. Considering that I am Brazilian, the translations are following this country variant. I noticed that in the last month, some translations were changed to match the Portugal Portuguese variant (replacing the initial in Brazilian Portuguese). They are interchangeable (we can understand either one), but some words are not usually used in one variant or in another.

If people keep changing to their preferred variant of the language, we will start having a UI that will change the name of the labels and fields every new version depending on who decided to make their variant more visible. This may be annoying for regular users as they may think that something was "removed" or changed (even if it is just a matter of wording).

I don't want to start a Portuguese language war. It is perfectly fine (and it is a common setting in most applications that provide translations) to provide two versions of Portuguese: pt-br (for Brazilian Portuguese) and pt-pt (for Portugal Portuguese)

My suggestion is to create two new locales: pt-br.json and pt-pt.json replacing pt.json, so we can translate in a better way.