hotfix for (#329) support for regional language codes

[sk-juroot]

Fixes #329

Description

Reworked CustomActivity.setLocale() to internally handle regional and non-regional language codes on various system versions.

Related issues

• WhereYouGo not using correct default language #329

Additional context

This code contains hardcoded check for Portuguese language (as the only regional-coded language in this project right now), since various Android devices may report this language as non-regional, causing falling back to English even when proper language asset is present.

[cgeo-ci-bot]

Can one of the core team members give me the the permission to test this?

[Lineflyer]

ok to test

[Lineflyer]

@bekuno Can you review the code?

[bekuno]

@bekuno Can you review the code?

The PR looks codewise fine.
But I did not tested it on a real device.

[Lineflyer]

@sk-juroot
What do you think?
Shall we include this into the upcoming release or better merge after release to have more time for testing in emulator and in our nightlies?

[sk-juroot]

@Lineflyer
Shall we include this into the upcoming release or better merge after release to have more time for testing in emulator and in our nightlies?

Guess there will be no harm in postponing this fix (along with required restart) into another release, there will be some time to reconsider settings in Crowdin and fine-tune expected results.

[Lineflyer]

As master is separated from release now (see branch handling in readme) its fine to merge and test this on master= in nightlies