XML: normalized the format (allows for implementing a quick diff algorithm)

git-svn-id: http://svn.code.sf.net/p/itop/code/trunk@3378 a333f486-631f-4898-b8df-5754b55c2be0

datamodels/2.x/itop-request-mgmt/datamodel.itop-request-mgmt.xml

@@ -1576,7 +1576,7 @@
               </dashlet>
             </dashlets>
           </cell>
-          <cell id="1">
+          <cell id="11">
             <rank>2</rank>
             <dashlets>
               <dashlet id="3" xsi:type="DashletGroupByTable">

datamodels/2.x/itop-tickets/datamodel.itop-tickets.xml

@@ -529,7 +529,6 @@
         </naming>
         <display_template/>
         <icon>images/workorder.png</icon>
-        <icon/>
         <reconciliation>
           <attributes>
             <attribute id="name"/>