clean up Roles.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@41520 20353a03-c40f-0410-a6d1-a30d3c3de9de

bt5/erp5_web_ung_core/PortalTypeRolesTemplateItem/Contribution%20Tool.xml

 <type_roles>
-  <role id='Auditor; Assignee; Manager'>
+  <role id='Assignor'>
    <property id='title'>UNG Contribution Role</property>
    <multi_property id='category'>function/ung_function</multi_property>
    <multi_property id='base_category'>function</multi_property>

bt5/erp5_web_ung_core/bt/revision

-25
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+26
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