CSS separation, multi-tenancy fixes

Oqtane.Client/Themes/LayoutBase.cs

@@ -0,0 +1,18 @@
+using Microsoft.AspNetCore.Components;
+using Oqtane.Shared;
+
+namespace Oqtane.Themes
+{
+    public class LayoutBase : ComponentBase, ILayoutControl
+    {
+        [CascadingParameter]
+        protected PageState PageState { get; set; }
+        public virtual string Panes { get; set; }
+
+        public string LayoutPath()
+        {
+            return "Themes/" + this.GetType().Namespace + "/";
+        }
+
+    }
+}