fix country codes Dominica + Dominican Republic

DM is Dominica and DO is Dominican Republic. Several translations had
that mixed up, including U.S. English. Some translations may need minor
corrections still.
Update ar_MA.js
Update be_FR.js
Update be_NL.js
Update bg_BG.js
Update da_DK.js
Update cs_CZ.js
Update de_DE.js
Update en_US.js
Update es_CL.js
Update es_ES.js
Update fa_IR.js
Update gr_EL.js
Update hu_HU.js
Update fr_FR.js
Update id_ID.js
Update it_IT.js
Update ja_JP.js
Update zh_TW.js
Update nl_NL.js