Updated dependencies.

Problem in [email protected].{0,1} - webpack-contrib/css-loader#79

Author: Semigradsky

package.json

@@ -37,9 +37,9 @@
   "devDependencies": {
     "babel-core": "^5.2.15",
     "babel-loader": "^5.0.0",
-    "css-loader": "^0.14.2",
+    "css-loader": "0.14.5",
     "cssgrace": "^2.0.2",
-    "cssnext": "^1.6.0",
+    "cssnext": "^1.7.0",
     "eslint": "^0.23.0",
     "eslint-loader": "^0.14.0",
     "eslint-plugin-react": "^2.3.0",
@@ -54,7 +54,7 @@
     "json-schema-faker": "^0.1.10",
     "load-grunt-tasks": "^3.1.0",
     "postcss": "^4.1.11",
-    "postcss-loader": "^0.4.2",
+    "postcss-loader": "^0.5.0",
     "postcss-nested": "^0.3.2",
     "react-hot-loader": "^1.2.7",
     "style-loader": "^0.12.1",