Make EditSession use AlertPartial

Author: DamianEdwards

src/FrontEnd/Pages/Admin/EditSession.cshtml

@@ -3,13 +3,7 @@
 
 <h3>Edit Session</h3>
 
-@if (Model.ShowMessage)
-{
-    <div class="alert alert-success alert-dismissible" role="alert">
-        <button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button>
-        @Model.Message
-    </div>
-}
+<partial name="_AlertPartial" model="(Model.ShowMessage, Model.Message)" />
 
 <form method="post" class="form-horizontal">
     <div asp-validation-summary="All" class="text-danger"></div>