Updated RRID in d/u/metadata

Reference:

 Author: Darty, Kévin and Denise, Alain and Ponty, Yann 

  Title: "VARNA: Interactive drawing and editing of the RNA secondary structure"

 Title: >

  VARNA: Interactive drawing and editing of the RNA secondary structure

 Journal: Bioinformatics

 Year: 2009

 Volume: 25

 Number: 15

 Pages: 1974-1975

  DOI: http://dx.doi.org/10.1093/bioinformatics/btp250

  URL: http://bioinformatics.oxfordjournals.org/content/25/15/1974

  eprint: http://bioinformatics.oxfordjournals.org/content/25/15/1974.full.pdf+html 

 DOI: "http://dx.doi.org/10.1093/bioinformatics/btp250"

 URL: "http://bioinformatics.oxfordjournals.org/content/25/15/1974"

 eprint: "http://bioinformatics.oxfordjournals.org/content/\

  25/15/1974.full.pdf+html"

Registry:

 - Name: OMICtools

   Entry: OMICS_04455 

 - Name: bio.tools

   Entry: NA

 - Name: SciCrunch

   Entry: NA