fix vuejs warning with _t method

package-lock.json

@@ -9646,9 +9646,9 @@
       }
     },
     "vue-polyglot": {
-      "version": "0.2.1",
-      "resolved": "https://registry.npmjs.org/vue-polyglot/-/vue-polyglot-0.2.1.tgz",
-      "integrity": "sha1-kb3HBQ+FMqq2Mqweu0wohU3/gLQ=",
+      "version": "0.2.2",
+      "resolved": "https://registry.npmjs.org/vue-polyglot/-/vue-polyglot-0.2.2.tgz",
+      "integrity": "sha512-wcnDk4Daq9heTWFRXN3qTZ0L0RQuFtAqScBUCrvCQRiihE12FOJie1FZ4KEB626i/itG/iUNN2lgCFARlnVrsg==",
       "requires": {
         "axios": "0.15.3"
       },

package.json

@@ -34,7 +34,7 @@
     "lesspass": "^6.0.0",
     "lodash.debounce": "^4.0.8",
     "vue": "^2.4.4",
-    "vue-polyglot": "^0.2.1",
+    "vue-polyglot": "^0.2.2",
     "vue-router": "^2.7.0",
     "vuejs-paginate": "^1.2.0",
     "vuex": "^2.3.1",