Fix create container form validation

Start/Client/Components/CreateContainer.razor

@@ -8,6 +8,8 @@
 
 <Dialog Title="Create Container" Active="this.state.Value.ShowCreateContainerForm" OnClose="this.OnDialogClose">
     <EditForm Model="this.Model" OnValidSubmit="this.OnSubmit">
+        <DataAnnotationsValidator />
+
         @if (this.state.Value.CreateContainerErrorMessage != null)
         {
             <Alert Type="Alert.AlertType.Error">
@@ -15,6 +17,8 @@
             </Alert>
         }
 
+        <ValidationSummary />
+
         <div class="form-group">
             <div class="container">
                 <div class="columns">