Fix for 132738. Allow users to edit the username field. r=ducarroz, sr=sspitzer, a=asa.

mailnews/base/prefs/resources/content/am-server.js

@@ -224,7 +224,6 @@ function setupFixedUI()
   var showFixedValues = gRedirectorType != null;
 
   var controls = [document.getElementById("fixedServerName"), 
-                  document.getElementById("fixedUserName"), 
                   document.getElementById("fixedServerPort")];
 
   var len = controls.length;  

mailnews/base/prefs/resources/content/am-server.xul

@@ -68,7 +68,6 @@ Contributors:
                   value="&userName.label;"/>
         </hbox>
         <hbox iscontrolcontainer="true" align="center">
-            <label id="fixedUserName" collapsed="true" use="server.realUsername"/>
             <textbox hidable="true" hidefor="nntp" wsm_persist="true"
                      size="25" id="server.realUsername"
                      prefstring="mail.server.%serverkey%.realusername"/>