Add Galician translation (#1407)

Add Galician translation

assets/windows/installer.nsi

@@ -48,6 +48,7 @@ OutFile "..\..\${DEST_FOLDER}\${FILE_NAME_INSTALLER}"
 !insertmacro MUI_LANGUAGE "English"
 !insertmacro MUI_LANGUAGE "Catalan"
 !insertmacro MUI_LANGUAGE "French"
+!insertmacro MUI_LANGUAGE "Galician"
 !insertmacro MUI_LANGUAGE "German"
 !insertmacro MUI_LANGUAGE "Indonesian"
 !insertmacro MUI_LANGUAGE "Italian"

locales/en/messages.json

@@ -90,6 +90,9 @@
     "language_fr": {
         "message": "Fran\u00e7ais (fr)"
     },
+    "language_gl": {
+        "message": "Galego (gl)"
+    },
     "language_id": {
         "message": "Bahasa Indonesia (id)"
     },

src/js/localization.js

@@ -6,7 +6,7 @@
 
 var i18n = {}
 
-const languagesAvailables = ['ca', 'de', 'en', 'es', 'fr', 'id', 'it', 'ja', 'ko', 'lv', 'pt', 'ru', 'sv', 'zh_CN'];
+const languagesAvailables = ['ca', 'de', 'en', 'es', 'fr', 'gl', 'id', 'it', 'ja', 'ko', 'lv', 'pt', 'ru', 'sv', 'zh_CN'];
 
 /**
  * Functions that depend on the i18n framework