Merge pull request #591 from mattermost/mm-1909

MM-1909 Upgrading ESLint, turning on new rules, enabling some warnings, optimizations

web/react/package.json

@@ -17,12 +17,12 @@
     "babelify": "^6.1.3",
     "uglify-js": "^2.4.24",
     "watchify": "^3.3.1",
-    "eslint": "^1.1.0",
-    "eslint-plugin-react": "^3.2.3"
+    "eslint": "^1.3.1",
+    "eslint-plugin-react": "^3.3.1"
   },
   "scripts": {
     "start": "watchify --extension=jsx -o ../static/js/bundle.js -v -d ./**/*.jsx",
-    "build": "NODE_ENV=production browserify ./**/*.jsx | uglifyjs > ../static/js/bundle.min.js",
+    "build": "NODE_ENV=production browserify ./**/*.jsx | uglifyjs -c -m --screw-ie8 > ../static/js/bundle.min.js",
     "test": "jest"
   },
   "browserify": {