Added new garbage collection option to clean unreferenced bibliographic values in bibXXx tables.  Useful for prettifying browse pages and nearest index term pages in order not to show any unreferenced, long-gone values.
Added new garbage collection option to clean unreferenced
bibliographic values in bibXXx tables.  Useful for prettifying browse
pages and nearest index term pages in order not to show any
unreferenced, long-gone values.

tiborsimko/invenio-accounts,inveniosoftware/invenio-accounts,inveniosoftware/invenio-accounts,inspirehep/invenio-accounts,inspirehep/invenio-accounts,tiborsimko/invenio-accounts,tiborsimko/invenio-accounts,inspirehep/invenio-accounts,inveniosoftware/invenio-accounts