make XHRs non-blocking again; change sharing dialog so sharing is done without closing the dialog (still lacks any feedback though)

services/sync/locales/en-US/share.dtd

@@ -1,3 +1,7 @@
 <!ENTITY dialog.title        "Weave Sharing">
-<!ENTITY dialog.label                 "Enter a Weave ID to share bookmarks with:">
-<!ENTITY username.label               "Email:">
+<!ENTITY close.button.label  "Close">
+<!ENTITY share.button.label  "Share">
+<!ENTITY description.top     "Enter a the ID of the user you wish to share your bookmarks with:">
+<!ENTITY description.ok      "Weave sharing complete!">
+<!ENTITY description.error   "Error.  Please check the Weave ID and try again.">
+<!ENTITY username.label      "Weave ID (Email):">

services/sync/modules/dav.js

@@ -108,11 +108,10 @@ DAVCollection.prototype = {
     let request = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"].createInstance();
     request = request.QueryInterface(Ci.nsIDOMEventTarget);
   
-//    request.addEventListener("load", new Utils.EventListener(self.cb, "load"), false);
-//    request.addEventListener("error", new Utils.EventListener(self.cb, "error"), false);
+    request.addEventListener("load", new Utils.EventListener(self.cb, "load"), false);
+    request.addEventListener("error", new Utils.EventListener(self.cb, "error"), false);
     request = request.QueryInterface(Ci.nsIXMLHttpRequest);
-//    request.open(op, this._baseURL + path, true);
-    request.open(op, this._baseURL + path, false); // FIXME: blocking
+    request.open(op, this._baseURL + path, true);
 
 
     // Force cache validation
@@ -135,9 +134,8 @@ DAVCollection.prototype = {
     request.channel.notificationCallbacks = this._authProvider;
 
     request.send(data);
-    ret = request;
-//    let event = yield;
-//    ret = event.target;
+    let event = yield;
+    ret = event.target;
 
     if (this._authProvider._authFailed)
       this._log.warn("_makeRequest: authentication failed");