science/orthanc-webviewer: Update to 2.10

Take maintainership:
    Maintainer unrepsonsive for almost two years:
    https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=275625
    Also unresponsive to more recent pings
Changes: https://orthanc.uclouvain.be/hg/orthanc-webviewer/