Applied bug fix from trunk r1646926.
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Applied patch from jira issue - OFBIZ-5767 - WebShoppingCart ignores session currency.
Thanks Josip Almasi for the contribution.
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git-svn-id: https://svn.apache.org/repos/asf/ofbiz/branches/release12.04@1646928 13f79535-47bb-0310-9956-ffa450edef68