corrected a few descriptions
corrected a few accuracy values
introduced four new items that are useless for gameplay but are needed for the compatibility of the 1.13 XML-Editor with the New Inventory
git-svn-id: https://ja2svn.mooo.com/source/ja2_v1.13_data@922 4f8fa57e-7814-0410-bad4-adc449f26b7c