fix up the tree widget to look a little nicer

mailnews/ui/messenger/resources/FilterListDialog.xul

@@ -15,27 +15,44 @@
   <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">
+    <tree id="filterTree" flex="100%" style="width: 100%;">
+      <treecol id="numColumn"/>
+      <treecol rdf:resource="http://home.netscape.com/NC-rdf#Name" id="nameColumn"/>
+      <treecol id="activeColumn"/>
+
+      <treehead>
+        <treeitem>
+         <treecell>Number</treecell>
+         <treecell>Name</treecell>
+         <treecell>Active</treecell>
+        </treeitem>
+      </treehead>
       <treebody>
         <treeitem open="true">
+        <treecell/>
         <treecell><treeindentation/>Sample Server 1</treecell>
         <treechildren>
           <treeitem>
+        <treecell/>
             <treecell><treeindentation/>People from work</treecell>
           </treeitem>
           <treeitem>
+        <treecell/>
             <treecell><treeindentation/>People from work</treecell>
           </treeitem>
         </treechildren>
         </treeitem>
 
         <treeitem open="true">
+        <treecell/>
         <treecell><treeindentation/>Sample Server 2</treecell>
         <treechildren>
           <treeitem>
+            <treecell/>
             <treecell><treeindentation/>People from college</treecell>
           </treeitem>
           <treeitem>
+            <treecell/>
             <treecell><treeindentation/>SPAM</treecell>
           </treeitem>
         </treechildren>
@@ -53,6 +70,7 @@
   </box>
   <box align="horizontal" class="padded">
     <checkbox/>
+    <spring class="spacer"/>
     <html:div>Log Filter Use</html:div>
     <spring flex="100%"/>
     <titledbutton class="push" value="View Log"/>