Elaborate on user name change not updating launcher.

SS14.Web/Areas/Identity/Pages/Account/Manage/Index.cshtml.cs

@@ -121,7 +121,7 @@ public async Task<IActionResult> OnPostUsernameAsync()
         _userManager.LogNameChanged(user, oldName, user.UserName, user);
 
         await _signInManager.RefreshSignInAsync(user);
-        StatusMessage = "Your username has been changed";
+        StatusMessage = "Your username has been changed. Note that it may take some time to visibly update in some places, such as the launcher.";
 
         await _dbContext.SaveChangesAsync();
         await tx.CommitAsync();