Chagned the alias reference to the data management icon from 'data' to...

Chagned the alias reference to the data management icon from 'data' to 'data-management'.  Fixes #3982

git-svn-id: http://subversion.wr.usgs.gov/repos/prog/isis3/branches/ipce@7236 41f8697f-d340-4b68-9986-7bafba869bb8