#46423-> removal of flex to straighten out taskbar groove in modern. r=ben

xpfe/communicator/resources/content/taskbarOverlay.xul

@@ -10,7 +10,7 @@
 <overlay id="taskbarOverlay"
          xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
 
-  <box id="taskbarMenuBox" flex="10" datasources="chrome://communicator/locale/taskbar.rdf"
+  <box id="taskbarMenuBox" datasources="chrome://communicator/locale/taskbar.rdf"
        ref="chrome://communicator/locale/taskbar.rdf#root" 
        rdf:containment="http://home.netscape.com/NC-rdf#entry http://home.netscape.com/NC-rdf#child">
        

xpfe/communicator/resources/content/tasksOverlay.xul

@@ -138,8 +138,10 @@
       <button class="button-toolbar-4 taskbutton" id="mini-addr" onclick="toAddressBook()"
               tooltip="aTooltip" tooltiptext="&taskAddressBook.tooltip;"/>
     </box>
+    <spring id="taskbar-middle-spacer" flex="10"/>
     <box id="taskbarMenuBox"/>
     <box id="taskbarGotoMenuBox" align="right"/>
+    <spring id="taskbar-right-spacer" flex="7"/>
   </box>
     
 </overlay>