优化依赖

web_src/package.json

@@ -22,6 +22,7 @@
     "url-search-params-polyfill": "^2.0.3",
     "vue": "^2.5.2",
     "vue-axios": "^2.0.2",
+    "vue-clipboard2": "^0.2.1",
     "vue-i18n": "5.0.3",
     "vue-router": "^3.0.1",
     "whatwg-fetch": "^2.0.3"