more package adds and version bumps

Author: billmurrin

.travis.yml

@@ -7,7 +7,7 @@ install:
   - npm install webpack -g
   - pwd
   - cd ../
-  - git clone -b "2.3.2" https://github.com/Graylog2/graylog2-server.git
+  - git clone -b "2.4.0" https://github.com/Graylog2/graylog2-server.git
   - cd graylog2-server/graylog2-web-interface
   - npm install
   - webpack --config webpack.vendor.js

package.json

@@ -24,6 +24,8 @@
     "immutable": "^3.7.5"
   },
   "devDependencies": {
-    "graylog-web-plugin": "file:../graylog2-server/graylog2-web-interface/packages/graylog-web-plugin"
+    "graylog-web-plugin": "file:../graylog2-server/graylog2-web-interface/packages/graylog-web-plugin",
+    "webpack": "^3.11.0",
+    "webpack-cli": "^2.1.3"
   }
 }