Release IGB 9.1.10 to BioViz.org

To perform the release:

• Create branch release-9.1.10 from the master branch - DONE
• On branch release-9.1.10, edit README.md page to include release name (see this commit from release 9.1.8) - DONE
• Push branch to repository, run bitbucket pipeline to create release artifacts for testing, notarize Apple installer as usual - DONE
• Create release branch IGBF-3209 on a fork of the BioViz repository, edit HTML to show that the current released version is 9.1.10 instead of 9.1.8 - DONE
• Deploy branch on a bioviz test site - DONE
• Run bioviz-playbooks with updated IGB release variables on a test site - DONE
• Upload installers and jar file to Sourceforge - DONE
• Tag latest release of IGB on Sourceforge - DONE
• Run bioviz playbooks on BioViz.org main site - DONE
• Release artifacts to nexus - DONE
• Test that running IGB 9.1.8 now invites user to upgrade to IGB 9.1.10 (expected behavior)