GSvar: refactoring of gene tab

[marc-sturm]

• [ ] add sub-tabs to gene tab:
  • [ ] transcripts (as is)
  • [ ] phenotype annotation (as is)
  • [ ] disease info (manual): disease/phenotype inheritance (special care - refactoring of disease/phenotype data?!)
  • [ ] Zusatzbefunde/ACMG
  • [ ] CAVE
  • [ ] Expression
  • [ ] Misc

Each new tab sould contain:

• text
• references table
  • PMID/DOI/URL/path (clickable links)
  • comment
  • added_by (user)
  • added_at (date)