Merge "build: Bump eslint devDependencies to latest"

diff --combined package.json
index 8ff77d8,b5b20de..5ce98a4
--- 1/package.json
--- 2/package.json
+++ b/package.json
@@@ -8,13 -8,13 +8,13 @@@
    },
    "devDependencies": {
      "deepmerge": "1.3.2",
-     "eslint": "3.12.2",
+     "eslint": "4.9.0",
      "eslint-config-wikimedia": "0.5.0",
      "grunt": "1.0.1",
      "grunt-banana-checker": "0.6.0",
      "grunt-contrib-copy": "1.0.0",
      "grunt-contrib-watch": "1.0.0",
-     "grunt-eslint": "20.0.0",
+     "grunt-eslint": "20.1.0",
      "grunt-jsonlint": "1.1.0",
      "grunt-karma": "2.0.0",
      "grunt-stylelint": "0.8.0",
@@@ -26,8 -26,8 +26,8 @@@
      "karma-qunit": "1.2.1",
      "nodemw": "0.10.1",
      "qunitjs": "2.4.0",
 -    "stylelint": "7.8.0",
 -    "stylelint-config-wikimedia": "0.4.1",
 +    "stylelint": "8.2.0",
 +    "stylelint-config-wikimedia": "0.4.2",
      "wdio-junit-reporter": "0.2.0",
      "wdio-mocha-framework": "0.5.8",
      "wdio-sauce-service": "^0.3.1",