Merge branch 'hotfix/update_gem_0.3.3'

* hotfix/update_gem_0.3.3:
  update gem
Merge branch 'release/0.4.6'

* release/0.4.6:
Merge branch 'release/0.5.0'

* release/0.5.0:
  add locales to session
  add German locales
  add buttons to navbar
  add files for deutsch locales
  add english locales
  add locale changer
Merge branch 'release/0.5.1'

* release/0.5.1:
  features by languges
  add page show by languages
  change navbar output
  add language to page
USA debt fixed
Merge branch 'hotfix/fix_usa_debt' into develop

* hotfix/fix_usa_debt:
  USA debt fixed