Add type="button" to all buttons and prevent display of Installer if already installed

Oqtane.Client/Shared/SiteRouter.razor

@@ -4,14 +4,12 @@
 @using System.Linq
 @using System.Collections.Generic
 @using Oqtane.Shared
-@using Microsoft.JSInterop
 @using Microsoft.AspNetCore.Components.Routing
 @inject AuthenticationStateProvider AuthenticationStateProvider
 @inject SiteState SiteState
 @inject IUriHelper UriHelper
 @inject INavigationInterception NavigationInterception
 @inject IComponentContext ComponentContext
-@inject IJSRuntime jsRuntime
 @inject IAliasService AliasService
 @inject ITenantService TenantService
 @inject ISiteService SiteService