revert to vue 2.5.22.

keyup was auto logging-in, when the browser filled the password field... that is bad: vuejs/vue#9441

Author: klinker24

package-lock.json

@@ -27,7 +27,7 @@
     "linkifyjs": "^2.1.8",
     "object-hash": "^1.3.1",
     "reconnecting-websocket": "^3.2.2",
-    "vue": "^2.6.3",
+    "vue": "~2.5.22",
     "vue-flatpickr-component": "^7.0.6",
     "vue-h-ajax": "^0.1.3",
     "vue-i18n": "^8.8.0",
@@ -79,7 +79,7 @@
     "url-loader": "^1.1.2",
     "vue-loader": "^15.6.2",
     "vue-style-loader": "^3.1.2",
-    "vue-template-compiler": "^2.6.3",
+    "vue-template-compiler": "~2.5.22",
     "webpack": "^4.29.3",
     "webpack-bundle-analyzer": "^3.0.3",
     "webpack-dev-middleware": "^3.5.2",