Add translators section in About activity

[Roboe]

An easy way to appreciate the work translators (including myself) have put into Lightning Browser. OSS is about collaboration, :)

This needs some gradual work before it is ready to merge, though. I'm calling actual translators right here to come and add themselves to the list: @pejakm, @kuc, @ByteHamster, @hereisdennis, @David-Guillot, @M2ck, @valentind44, @MarkThat, @chirs1985, @anthologist, Death Mask Salesman, @takahirom, @rishubil, @zygimantus, @smarquespt and @ageback. Hope I didn't overlooked anyone.

Things they should do:

• Greet me, so I can grant you write-permissions to my fork. Then you can use GitHub's online editor or manually push to the l10n-credits branch to appear in this actual PR.
• Add yourself to the app/src/main/res/values/translators.xml file.
• Add localized languages strings to your app/src/main/res/values-XX/strings.xml` file:

<!-- Languages -->
    <string name="translators">Application translators</string>
    <string name="language_ar">Arabic</string>
    <string name="language_de">German</string>
    <string name="language_es">Spanish</string>
    <string name="language_fr">French</string>
    <string name="language_gr">Greek</string>
    <string name="language_hu">Hungarian</string>
    <string name="language_it">Italian</string>
    <string name="language_iw">Hebrew</string>
    <string name="language_ja">Japanese</string>
    <string name="language_ko">Korean</string>
    <string name="language_lt">Lithuanian</string>
    <string name="language_pl">Polish</string>
    <string name="language_pt">Portuguese</string>
    <string name="language_ru">Russian</string>
    <string name="language_sr">Serbian</string>
    <string name="language_tr">Turkish</string>
    <string name="language_zh_rCN">Simplified Chinese</string>
    <string name="language_zh_rTW">Traditional Chinese</string>

Don't worry if any of you mess it up with commits or something. I will clean the git history and squash some commits before @anthonycr merge this.

Have a good day!

[ghost]

But some languages have translations made by multiple people, some were completely rewritten by next person...
BTW It is really necessary? We don't have "application contributors" neither.

[Roboe]

But some languages have translations made by multiple people, some were completely rewritten by next person...

Every person who has contributed in any form could have its name listed, why not? 😊 If there are multiple translators, their names can be comma-separated in the same string: Person 1, person 2. I've seen this behaviour in other apps like Amaze File Manager.

BTW It is really necessary? We don't have "application contributors" neither.

Anyone can do an "Application contributors" section, and it's a good idea, IMO.

I really don't see any argument against listing translators/contributors: it's just a name in About, takes up barely no space and doesn't need any maintenance at all, 😗