Panel, Tabview, Propertie controls converted

Changed the html to output bootstrap html, masterpages load our belle
css + bootstrap.min.js

src/umbraco.controls/MenuSplitButton.cs

@@ -0,0 +1,72 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Web.UI.HtmlControls;
+using System.Web.UI.WebControls;
+
+namespace umbraco.uicontrols
+{
+    public class MenuSplitButton : Panel
+    {
+
+        public string Text { get; set; }
+        public List<HtmlAnchor> HtmlAnchors { get; set; }
+
+        public string OnClientClick { get; set; }    
+
+        public void AddLink(HtmlAnchor link)
+        {
+            if(HtmlAnchors == null)
+                HtmlAnchors = new List<HtmlAnchor>();
+
+            HtmlAnchors.Add(link);
+        }
+
+        protected override void Render(System.Web.UI.HtmlTextWriter writer)
+        {
+            writer.Write("</div>");
+            base.Render(writer);
+            this.Render(writer);
+            writer.Write("<div class='btn-group>");
+        }
+
+
+        protected override void OnLoad(EventArgs e)
+        {
+ 	        base.OnLoad(e);
+            base.CssClass = "btn-group";
+
+            HtmlButton btn = new HtmlButton();
+            btn.InnerText = Text;
+            btn.Attributes.Add("class", "btn");
+            this.Controls.Add(btn);
+
+            HtmlButton btnToggle = new HtmlButton();
+            btnToggle.InnerHtml = "<span class='caret'></span>";
+            btnToggle.Attributes.Add("class", "btn dropdown-toggl");
+            btnToggle.Attributes.Add("data-toggle", "dropdown");
+            this.Controls.Add(btnToggle);
+
+            Literal list = new Literal();
+            this.Controls.Add(list);
+
+            StringBuilder sb = new StringBuilder();
+            sb.Append("<ul class='dropdown-menu'>");
+
+            foreach (var htmlAnchor in HtmlAnchors)
+            {
+                sb.Append("<li><a ");
+                foreach (var attr in htmlAnchor.Attributes.Keys)
+                {
+                    sb.Append(attr + "='" + htmlAnchor.Attributes[attr.ToString()] + "' ");
+                }
+                sb.Append(">" + htmlAnchor.InnerText + "</a></li>");
+            }
+
+            sb.Append("</ul>");
+            list.Text = sb.ToString();
+        }
+
+    }
+}