Applied bug fix from trunk r1632777.
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Applied patch from jira issue - OFBIZ-5714 - Comment does not save.
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1. find P.O.
2. select approaved p.o.
3. edit items
4 add item (at bottom of screen)
5. Comment does not save.
Note! shouldn't the comment be displayed on some of the P.O. screens?
I only know it does not save as I edited the .FTL on viewpo and pdf to include comment. Comments from the orignal create P.O. show up, ALso should be able to edit a comment, when edit items is entered.
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Thanks Joel for creating the issue and Thanks Akash for providing the patch.

git-svn-id: https://svn.apache.org/repos/asf/ofbiz/branches/release12.04@1632780 13f79535-47bb-0310-9956-ffa450edef68