Update French translation
Merge pull request #19 from dev-ggallon/develop

Update French translation
Adding Dutch and Turkish languages.
Adding a better set of flags, source https://www.gosquared.com/resources/flag-icons/
Switching to the new set of flags, some of them are missing, this is to be fixed.
Updating README.md.
Fixing the flag for BQ Bonaire, Sint Eustatius and Saba.
Fixing the flag for BV Bouvet Island.
Fixing the flag for GF French Guiana.
Fixing the flag for GP Guadeloupe.
Fixing the flag for HM Heard Island and McDonald Islands.
Fixing the flag for IO British Indian Ocean Territory.
Fixing the flag for PM Saint Pierre and Miquelon.
Fixing the flag for RE Réunion.
Fixing the flag for SJ Svalbard and Jan Mayen.
Fixing the flag for SX Sint Maarten (Dutch part).
Fixing the flag for UM United States Minor Outlying Islands.
Removing the old set of flags.
Merge branch 'master' into develop