This PR adds the strings for "enemy panel", "iceland" and "pangaea". It
also organises the json file in a different way due to the start of use
of Crowdin (it doesn't interfere in any way with the functionality of
the translations). It also edits the existing translations for the
languages.
Credits:
- Bulgarian - Nikola123
- Dutch - cldprv, tryout33
Adding the base bulgarian language json file and making it usable in
game. This PR is building on top of the multi language support PR. Note:
Needs PR #316 to work!