add node-sass

Author: linux-china

src/main/frontend/package.json

@@ -12,19 +12,20 @@
   },
   "private": true,
   "dependencies": {
+    "@angular/animations": "^4.2.3",
     "@angular/common": "^4.2.3",
     "@angular/compiler": "^4.2.3",
     "@angular/core": "^4.2.3",
     "@angular/forms": "^4.2.3",
     "@angular/http": "^4.2.3",
-    "@angular/animations": "^4.2.3",
     "@angular/material": "^2.0.0-beta.7",
     "@angular/platform-browser": "^4.2.3",
     "@angular/platform-browser-dynamic": "^4.2.3",
     "@angular/router": "^4.2.3",
     "bootstrap": "^3.3.7",
     "core-js": "^2.4.1",
     "jquery": "3.1.1",
+    "node-sass": "^4.5.3",
     "rxjs": "^5.4.1",
     "zone.js": "^0.8.12"
   },