Change Skin -> Theme

To better align with commonly used terminology in industry renamed all references from Skin -> Theme.

Oqtane.Client/Themes/Controls/Profile.razor

@@ -0,0 +1,36 @@
+@using Microsoft.AspNetCore.Components.Routing
+@using Oqtane.Themes
+@using Oqtane.Shared
+@using Oqtane.Services;
+@using Oqtane.Models;
+@using Microsoft.JSInterop
+@inject IJSRuntime jsRuntime
+@inherits ThemeObjectBase
+
+<NavLink class="btn btn-primary" href="@url">@name</NavLink>
+
+@functions {
+    string name = "";
+    string url = "";
+
+    protected override async Task OnInitAsync()
+    {
+        var interop = new Interop(jsRuntime);
+        string userid = await interop.GetCookie("user");
+
+        if (userid == "")
+        {
+            name = "Register";
+            url = "register";
+        }
+        else
+        {
+            if (PageState.User != null)
+            {
+                name = PageState.User.DisplayName;
+            }
+        }
+    }
+}
+
+