fix(package): update normalize.css to version 7.0.0

Closes #72

Author: greenkeeper[bot]

package.json

@@ -45,7 +45,7 @@
     "ng2-smart-table": "^0.5.1-0",
     "ng2-tree": "^2.0.0-alpha.0",
     "ngx-uploader": "^2.0.24",
-    "normalize.css": "^5.0.0",
+    "normalize.css": "^7.0.0",
     "reflect-metadata": "^0.1.9",
     "rimraf": "https://registry.npmjs.org/rimraf/-/rimraf-2.5.4.tgz",
     "rxjs": "~5.1.0",