EDIT

• Avoid -title cache generation not implemented- for citations in specimen table view
• Add default value (barcode of specimen > "scan x") to thumbnail label for specimen scans (motif can often be empty because it is always the same)
• Do not show UUID on media site (http://campanula.e-taxonomy.net/cdm_dataportal/media/ac44e4b5-4820-46bc-820e-9e414c6b52e7)
  • media site is only used as fallback -> will open images with direct link
• Open images from specimen table in separate tab and in a viewer

-> merged remaining issues into #6320