Tab reorganization and db changes

Combined 'Overview' and 'Genome Summary'; renamed 'References' to 'Publications'; added 'Traits & QTL' and 'Markers'; sections that lack data say so; can link to page via URL with a specific tab active (e.g. .../maps); started models for QTL and marker pages; added organism_id to phavu_contents table with same value as legume_id.