bug: added error handling when a truth item has been deleted.
enh: link to community and dataset, removed anonymous id listing.
enh: removed back button in favor of breadcrumbs links.
enh: improved presentation of header information for a score.
enh: overlay says Job Details for all jobs, links to correct tab.
enh: added support for displaying mouseover on metric columns.
Merge branch 'isbiprostate_improvements'

* isbiprostate_improvements:
  enh: added support for displaying mouseover on metric columns.
  enh: overlay says Job Details for all jobs, links to correct tab.
  enh: improved presentation of header information for a score.
  enh: removed back button in favor of breadcrumbs links.
  enh: link to community and dataset, removed anonymous id listing.
  bug: added error handling when a truth item has been deleted.