增加loading；修改部分css

frontend/admin/package.json

@@ -20,6 +20,7 @@
     "babel-preset-es2015": "^6.0.0",
     "babel-preset-stage-2": "^6.0.0",
     "babel-register": "^6.0.0",
+    "codemirror": "^5.17.0",
     "connect-history-api-fallback": "^1.1.0",
     "css-loader": "^0.23.0",
     "eventsource-polyfill": "^0.9.6",
@@ -42,6 +43,7 @@
     "vue-resource": "^0.9.3",
     "vue-router": "^0.7.13",
     "vue-style-loader": "^1.0.0",
+    "vue-tagsinput": "^0.3.1",
     "webpack": "^1.12.2",
     "webpack-dev-middleware": "^1.4.0",
     "webpack-hot-middleware": "^2.6.0",