moving win10 app, bringing back uploader

clients/win10/app/msapp-error.js

@@ -0,0 +1,22 @@
+(function () { 
+  var validParameterNames = [ "httpStatus", "failureName", "failureUrl" ]; 
+  
+  function parseQueryParameters() { 
+    var query = location.search.slice(1); 
+    return query.split("&").reduce(function (queryParameters, rawPair) {
+                                   var pair = rawPair.split("=").map(decodeURIComponent);
+                                   queryParameters[pair[0]] = pair[1];
+                                   return queryParameters;
+    }, {});
+  }
+ 
+  function initialize() {
+    var queryParameters = parseQueryParameters();
+    validParameterNames.forEach(function (parameterName) {
+                               var parameterValue = queryParameters[parameterName] || "N/A"; 
+                               document.getElementById(parameterName + "Value").textContent = parameterValue;
+    });
+  }
+  
+  document.addEventListener("DOMContentLoaded", initialize);
+}());