Added hooks for gift aid from version 2.0
renamed tpl AddToGfitAid to AddToBatch
Move CustomGroupData.xml  into xml/data
Fixed class names since we re structured the code
removed sql as we don't use
fixed require classes
added enable, disable and uninstall function
updated the url for th report
no need to xml menu file
fixed import class
automatic register report and also delete all registered report when upgrade from version 1.0 and 2.0beta