Fix some cleanup issues. Better error pages for bad dactyl: URLs. Remove some dead code. Other cleanup.

common/content/dactyl.js

@@ -56,7 +56,11 @@ var Dactyl = Module("dactyl", XPCOM(Ci.nsISupportsWeakReference, ModuleBase), {
         delete window.dactyl;
         delete window.liberator;
 
+        styles.system.add("cleanup-sheet", config.styleableChrome, <![CDATA[
+            #TabsToolbar tab { display: none; }
+        ]]>);
         styles.unregisterSheet("resource://dactyl-skin/dactyl.css");
+        DOM('#TabsToolbar tab', document).style.display;
     },
 
     destroy: function () {

common/content/statusline.js

@@ -12,7 +12,6 @@ var StatusLine = Module("statusline", {
     init: function init() {
         this._statusLine = document.getElementById("status-bar");
         this.statusBar = document.getElementById("addon-bar") || this._statusLine;
-        this.statusBar.collapsed = true;
         this.baseGroup = this.statusBar == this._statusLine ? "StatusLine " : "";
 
         if (this.statusBar.localName == "toolbar") {