fix up the tree widget to look a little nicer

mailnews/ui/messenger/resources/FilterListDialog.xul

@@ -1,66 +0,0 @@
-<?xml version="1.0"?>
-<?xml-stylesheet href="resource:/res/samples/xul.css" type="text/css"?>
-<?xml-stylesheet href="chrome://messenger/skin/" type="text/css"?>
-<?xml-stylesheet href="resource:/res/samples/preftree.css" type="text/css"?>
-
-<!DOCTYPE window>
-
-
-<window
-  xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-  xmlns:html="http://www.w3.org/TR/REC-html40"
-  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
-
-<box align="vertical" style="width: 100%">
-  <box align="horizontal" flex="100%">
-    <box align="vertical" style="width:100%;" flex="100%" class="cleanborder">
-    <html:div>Filters will be applied in the following order:</html:div>
-    <tree id="filterTree">
-      <treebody>
-        <treeitem open="true">
-        <treecell><treeindentation/>Sample Server 1</treecell>
-        <treechildren>
-          <treeitem>
-            <treecell><treeindentation/>People from work</treecell>
-          </treeitem>
-          <treeitem>
-            <treecell><treeindentation/>People from work</treecell>
-          </treeitem>
-        </treechildren>
-        </treeitem>
-
-        <treeitem open="true">
-        <treecell><treeindentation/>Sample Server 2</treecell>
-        <treechildren>
-          <treeitem>
-            <treecell><treeindentation/>People from college</treecell>
-          </treeitem>
-          <treeitem>
-            <treecell><treeindentation/>SPAM</treecell>
-          </treeitem>
-        </treechildren>
-        </treeitem>
-
-    </treebody>
-
-    </tree>
-    </box>
-    <box align="vertical" class="padded">
-      <titledbutton class="push" value="New.."/>
-      <titledbutton class="push" value="Edit.."/>
-      <titledbutton class="push" value="Delete"/>
-    </box>
-  </box>
-  <box align="horizontal" class="padded">
-    <checkbox/>
-    <html:div>Log Filter Use</html:div>
-    <spring flex="100%"/>
-    <titledbutton class="push" value="View Log"/>
-  </box>
-  <box align="vertical" class="cleanborder">
-    <html:div>Description</html:div>
-    <html:div>(description goes here..)</html:div>
-  </box>
-</box>
-
-</window>