ToolDownload has been modified to pick up the name of the tool content handler bean from the servlet definition, rather than hardcoding a standard name. The tool was use the new definition.
The default content id was hardcoded, so it wasn't linking to the default content properly. Replaced hardcoded value with the tag value used by the tool deploy utility.
Modified the "leaveToolSession" and related code to allow the tool to pass the userid (which it gets from UserDTO in the shared session) rather than pass User (which the tool doesn't have).
