Upgrade to react-router v4

* Import from react-router-dom
* Use withRouter
* Remove react-router-redux
* Replace AuthenticatedPage with PrivateRoute

package.json

@@ -16,7 +16,7 @@
     "react-dom": "^15.6.1",
     "react-feather": "^1.0.7",
     "react-redux": "^5.0.2",
-    "react-router": "^3.0.5",
+    "react-router-dom": "^4.2.2",
     "react-tag-autocomplete": "^5.4.1",
     "recompose": "^0.25.0",
     "redux": "^3.6.0",

src/molecules/AppBar.js

 import React from 'react'
-import { Link } from 'react-router'
+import { Link } from 'react-router-dom'
 import classnames from 'classnames'
 import classes from './AppBar.local.scss'
 import Icon from '../atoms/Icon'

test/AppBar.test.js

 import React from 'react'
 import { clone } from 'lodash'
 import { shallow } from 'enzyme'
-import { Link } from 'react-router'
+import { Link } from 'react-router-dom'
 import renderer from 'react-test-renderer'
 
 import AppBar from '../src/molecules/AppBar'