Move i18n to vue-i18n and json files

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

js/package.json

@@ -9,7 +9,7 @@
     "dev": "vue-cli-service build --watch",
     "test:e2e": "vue-cli-service test:e2e",
     "test:unit": "vue-cli-service test:unit",
-    "prepare": "patch-package"
+    "vue-i18n-extract": "vue-i18n-extract"
   },
   "dependencies": {
     "apollo-absinthe-upload-link": "^1.5.0",
@@ -18,7 +18,6 @@
     "apollo-link": "^1.2.11",
     "apollo-link-http": "^1.5.14",
     "buefy": "^0.8.2",
-    "easygettext": "^2.7.0",
     "graphql": "^14.2.1",
     "graphql-tag": "^2.10.1",
     "leaflet": "^1.4.0",
@@ -33,7 +32,7 @@
     "vue": "^2.6.10",
     "vue-apollo": "^3.0.0-rc.1",
     "vue-class-component": "^7.0.2",
-    "vue-gettext": "^2.1.3",
+    "vue-i18n": "^8.14.0",
     "vue-property-decorator": "^8.1.0",
     "vue-router": "^3.0.6",
     "vue2-leaflet": "^2.0.3",
@@ -58,12 +57,12 @@
     "eslint": "^6.0.1",
     "graphql-cli": "^3.0.12",
     "node-sass": "^4.11.0",
-    "patch-package": "^6.1.2",
     "sass-loader": "^8.0.0",
     "tslint": "^5.16.0",
     "tslint-config-airbnb": "^5.11.1",
     "typescript": "^3.4.3",
     "vue-cli-plugin-webpack-bundle-analyzer": "^1.3.0",
+    "vue-i18n-extract": "^1.0.2",
     "vue-svg-inline-loader": "^1.2.15",
     "vue-template-compiler": "^2.6.10",
     "webpack": "^4.30.0"