- update metadata to inform users not to use this business template

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@28157 20353a03-c40f-0410-a6d1-a30d3c3de9de

bt5/erp5_bpm/bt/description

-This is development playground for BPM system developers.
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+This is development playground for BPM system developers.
+WARNING: Do not install on production sites!
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bt5/erp5_bpm/bt/revision

-218
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+219
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