Automatically mark msg as read in Mail module

This avoids an extra XHR to the server.

UI/MailerUI/UIxMailView.m

@@ -278,6 +278,9 @@ static NSString *mailETag = nil;
                             andJSONRepresentation: data];
     }
 
+  // Mark message as read
+  [co addFlags: @"seen"];
+
   data = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                        [self attachmentAttrs], @"attachmentAttrs",
                        [self shouldAskReceipt], @"shouldAskReceipt",

UI/WebServerResources/js/Mailer/Message.service.js

@@ -672,12 +672,8 @@
     this.$futureMessageData = futureMessageData.then(function(data) {
       // Calling $timeout will force Angular to refresh the view
       if (_this.isread === 0) {
-        Message.$$resource.fetch(_this.$absolutePath(), 'markMessageRead').then(function() {
-          Message.$timeout(function() {
-            _this.isread = true;
-            _this.$mailbox.unseenCount--;
-          });
-        });
+        _this.isread = true;
+        _this.$mailbox.unseenCount--;
       }
       return Message.$timeout(function() {
         angular.extend(_this, data);