Change unlink to delete for issue201

work.xml

@@ -197,7 +197,7 @@
             <field name="perm_read" eval="True"/>
             <field name="perm_write" eval="False"/>
             <field name="perm_create" eval="False"/>
-            <field name="perm_unlink" eval="False"/>
+            <field name="perm_delete" eval="False"/>
         </record>
         <record model="ir.model.access" id="access_work_admin">
             <field name="model" search="[('model', '=', 'timesheet.work')]"/>
@@ -205,7 +205,7 @@
             <field name="perm_read" eval="True"/>
             <field name="perm_write" eval="True"/>
             <field name="perm_create" eval="True"/>
-            <field name="perm_unlink" eval="True"/>
+            <field name="perm_delete" eval="True"/>
         </record>
     </data>
 </tryton>