remove vulnerabilities, update http-server

Author: ansrivas

front/package-lock.json

@@ -84,7 +84,7 @@
     "@angularclass/hmr": "~1.2.2",
     "@angularclass/hmr-loader": "^3.0.4",
     "core-js": "^2.4.1",
-    "http-server": "^0.9.0",
+    "http-server": "^0.11.1",
     "ie-shim": "^0.1.0",
     "reflect-metadata": "^0.1.10",
     "rxjs": "~5.0.2",