Redirected the "Create Bom" link, and removed the unnecessary/duplicated screen that was linked to it, to the "Edit Product BOM" screen. This fixes OFBIZ-5483 (thanks to Christian Carlow for the report).

git-svn-id: https://svn.apache.org/repos/asf/ofbiz/trunk@1581712 13f79535-47bb-0310-9956-ffa450edef68