Merge pull request #4164 from MetaMask/i4010-deps3

Adds css-loader and file-loader needed for storybook integration

package.json

@@ -76,6 +76,7 @@
     "classnames": "^2.2.5",
     "clone": "^2.1.1",
     "copy-to-clipboard": "^3.0.8",
+    "css-loader": "^0.28.11",
     "currency-formatter": "^1.4.2",
     "debounce": "^1.0.0",
     "debounce-stream": "^2.0.0",
@@ -111,6 +112,7 @@
     "extensionizer": "^1.0.0",
     "fast-json-patch": "^2.0.4",
     "fast-levenshtein": "^2.0.6",
+    "file-loader": "^1.1.11",
     "fuse.js": "^3.2.0",
     "gulp": "github:gulpjs/gulp#4.0",
     "gulp-autoprefixer": "^5.0.0",