Improve consistency in translations, fix language codes, use cyrillicGlyphs,...

Improve consistency in translations, fix language codes, use cyrillicGlyphs, tweak Serbian translation strings (#407)

* Tweak Serbian translations

* Add "cyrillicGlyphs": true to translations that use Cyrillic

* translation_cs_cz.json → translation_cs.json

The correct language code for Czech is CS; CZ is the country code

* Add "cyrillicGlyphs": false to other translations, move "languageLocalName" to top

Also change BG and HU "localLanguageName" to start with a capital letter

* Add missing "languageLocalName" field for Slovak

* Rearrange a few fields so they're in the same order for all languages

* Regenerate translations source file

* Portugues → Português

* translation_dk.json → translation_da.json

DA is the ISO 639-1 code for Danish

* translation_ua.json → translation_uk.json

UK is the ISO 639-1 code for Ukrainian

* Update language codes in build.sh