fix some errors

[naderjavid]

Hello, I used crud command but after that i faced with some errors that i fixed them in first two commit.

[naderjavid]

The new version of abp framework uses this content toolbar for top buttons in all modules and also i checked all the abp modules and all of them has this code @section content_toolbar { @await Component.InvokeAsync(typeof(AbpPageToolbarViewComponent), new { pageName = typeof(IndexModel).FullName }) }

This is a example in the main repository [https://github.com/abpframework/abp/blob/dev/modules/identity/src/Volo.Abp.Identity.Web/Pages/Identity/Users/Index.cshtml]