Merge pull request #1001 from LeeDumond/fix/fix-logout-form-action

change form action from non-existent Logoff to Logout

src/Services/Identity/Identity.API/Views/Shared/_LoginPartial.cshtml

@@ -7,7 +7,7 @@
 
 @if (SignInManager.IsSignedIn(User))
 {
-    <form asp-area="" asp-controller="Account" asp-action="LogOff" method="post" id="logoutForm" class="navbar-right">
+    <form asp-area="" asp-controller="Account" asp-action="Logout" method="post" id="logoutForm" class="navbar-right">
         <ul class="nav navbar-nav navbar-right">
             <li>
                 <a asp-area="" asp-controller="Manage" asp-action="Index" title="Manage">Hello @UserManager.GetUserName(User)!</a>