Remove jquery-ujs (#2939)

* Remove jquery-ujs

* fix for eslint

package.json

@@ -57,7 +57,6 @@
     "http-link-header": "^0.8.0",
     "immutable": "^3.8.1",
     "intl": "^1.2.5",
-    "jquery-ujs": "^1.2.2",
     "js-yaml": "^3.8.3",
     "lodash": "^4.17.4",
     "node-sass": "^4.5.2",
@@ -70,6 +69,7 @@
     "prop-types": "^15.5.8",
     "punycode": "^2.1.0",
     "rails-erb-loader": "^5.0.0",
+    "rails-ujs": "^5.1.0",
     "react": "^15.5.4",
     "react-addons-perf": "^15.4.2",
     "react-addons-shallow-compare": "^15.5.2",