Update bower.json

adjust bootstrap-datepicker version

Author: tszpinda

bower.json

@@ -15,6 +15,6 @@
     "qunit": "~1.15.0"
   },
   "devDependencies": {
-    "bootstrap-datepicker": "~1.3.1"
+    "bootstrap-datepicker": "~1.4.0"
   }
 }