Improve application-specific language-files

[sebastiaanspeck]

Is your feature request related to a problem? Please describe.
To support multiple-language, I created an English and Dutch language-file. These files can be improved and extend it with new languages.

Describe the solution you'd like
The language-files (called application.php) for English and Dutch are a good start, but I think they can be improved and will eventually improve the localisation of this application.

Describe alternatives you've considered
I made a start to translate all the English labels to Dutch, but I am not yet satisfied with all translations.

Additional context
Add any other context or screenshots about the feature request here.

TODO

• English
• Dutch
• Spanish
• Italian
• Indonesian
• French
• German

[sebastiaanspeck]

I added an EXAMPLE.md for people who want to contribute to the languages

[tribakzero]

Added spanish translations.

[sebastiaanspeck]

You can add new language by running:
php artisan trans:publish [2-letter-country code] --force and then copy the ‘application.php’ and the ‘cup_rounds.php’ from the en-folder to the new language