update npm packages to fix vulnerabilities; add axios

cateditor/package.json

@@ -8,6 +8,7 @@
     "lint": "vue-cli-service lint"
   },
   "dependencies": {
+    "axios": "^0.18.0",
     "vue": "^2.6.6",
     "vue2-filters": "^0.6.0",
     "vuetify": "^1.5.5",
@@ -16,7 +17,7 @@
   "devDependencies": {
     "@vue/cli-plugin-babel": "^3.5.0",
     "@vue/cli-plugin-eslint": "^3.5.0",
-    "@vue/cli-service": "^3.5.0",
+    "@vue/cli-service": "^3.6.0",
     "@vue/eslint-config-standard": "^4.0.0",
     "babel-eslint": "^10.0.1",
     "eslint": "^5.8.0",