fix(@angular/cli): properly support CSS url()'s with whitespace

Author: Charles Lyding

package.json

@@ -43,7 +43,7 @@
     "autoprefixer": "^6.5.3",
     "chalk": "^1.1.3",
     "common-tags": "^1.3.1",
-    "css-loader": "^0.27.3",
+    "css-loader": "^0.28.1",
     "cssnano": "^3.10.0",
     "debug": "^2.1.3",
     "denodeify": "^1.2.1",

packages/@angular/cli/package.json

@@ -32,7 +32,7 @@
     "autoprefixer": "^6.5.3",
     "chalk": "^1.1.3",
     "common-tags": "^1.3.1",
-    "css-loader": "^0.27.3",
+    "css-loader": "^0.28.1",
     "cssnano": "^3.10.0",
     "debug": "^2.1.3",
     "denodeify": "^1.2.1",