Improved dictionary options for Portuguese (Brasil) thanks to assistance from gjeuken!

* Current dictionary renamed to portuguese (Brasil) (Extended) and includes letters with diacritics çáéíóúâêôãõà and the letters kwy.
* New dictionary replaces these with a, c, e, i, o, and u, and removes k, w, and y.
* Removed words containing unused diacritics: åèîïö.

Suggestions for your favourite language? Feedback welcome.

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