Rename and sort the locales

This changed some locale names (often just upper/lowercase changes):
* cs: `Česky` -> `čeština` [[Wikipedia](https://en.wikipedia.org/wiki/Czech_language)]: kvarel, martinstarman
* es: `Español` -> `español` [[Wikipedia](https://en.wikipedia.org/wiki/Spanish_language)]: TomMalbran
* fr: `Français` -> `français` [[Wikipedia](https://en.wikipedia.org/wiki/French_language)]
* hr: `Hrvatski` -> `hrvatski` [[Wikipedia](https://en.wikipedia.org/wiki/Croatian_language)]: diomed
* id: `Indonesia` -> `Bahasa Indonesia` [[Wikipedia](https://en.wikipedia.org/wiki/Indonesian_language)]: pace-noge
* fa-ir: `Persian-فارسی` -> `فارسی` [[Wikipedia](https://en.wikipedia.org/wiki/Persian_language)]: mohammadyaghobi
* pt-br: `Português do Brasil` -> `português (Brasil)` [[Wikipedia](https://en.wikipedia.org/wiki/Portuguese_language)]: Rynaro
* pt-pt: `Português` -> `português (Portugal)` [[Wikipedia](https://en.wikipedia.org/wiki/Portuguese_language)]
* ro: `Română` -> `română` [[Wikipedia](https://en.wikipedia.org/wiki/Romanian_language)]: micnic
* sk: `Slovenský` -> `slovenčina` [[Wikipedia](https://en.wikipedia.org/wiki/Slovak_language)]: erichstark
* sr: `српски` -> `Српски` [[Wikipedia](https://en.wikipedia.org/wiki/Serbian_language)]
* sv: `Svenska` -> `svenska` [[Wikipedia](https://en.wikipedia.org/wiki/Swedish_language)]: mikaeljorhult
* hu: `Magyar` -> `magyar` [[Wikipedia](https://en.wikipedia.org/wiki/Hungarian_language)]: rigor789

I've looked the language names up [here](https://www.google.com/preferences#languages) and confirmed them using Wikipedia.