bump jquery.strengthify to 0.4.1

bower.json

@@ -23,7 +23,7 @@
     "select2": "~3.4.8",
     "zxcvbn": "*",
     "snapjs": "~2.0.0-rc1",
-    "strengthify": "*",
+    "strengthify": "0.4.1",
     "underscore": "~1.6.0"
   }
 }