bump Select2

Author: alexweissman

app/sprinkles/core/bower.json

@@ -27,7 +27,7 @@
         "handlebars": "3.0.3",
         "jquery": ">= 2.2.4",
         "jquery-validation": "~1.14.0",
-        "select2": "4.0.3",
+        "select2": "4.0.4",
         "tablesorter": "jquery.tablesorter#2.28",
         "moment": "2.17.1",
         "speakingurl": "11.0.0",