Adding back cartodb.css stylesheet for old cartodb.js maps

.gitignore

@@ -56,7 +56,6 @@ Vagrantfile
 /node_modules
 .grunt/*
 vendor/assets/javascripts/cartodb.*
-vendor/assets/stylesheets/cartodb.*
 public/test_support.csv
 public/test_guess_country.csv
 doc/manual/build

package.json

@@ -1,6 +1,6 @@
 {
   "name": "cartodb-ui",
-  "version": "4.0.15",
+  "version": "4.0.16",
   "description": "CartoDB UI frontend",
   "repository": {
     "type": "git",