remove reference to jquiery.ui stylesheet to get Nicolas' styling of the
dropdowns to take precedence
Merge branch 'master' of https://github.com/mpi2/PhenotypeArchive

* 'master' of https://github.com/mpi2/PhenotypeArchive:
  fixed image links from gene page which already had config but no spans linked to them anymore????
  Changed table header from 'Analysis' to Source in table download too