v0.8.1

Note: with this release, PUBLIC_FRACTAL_ADMIN_SUPPORT_EMAIL becomes a required
environment variable, and npm run build fails if it is missing. If you do not
need a support email, just include a PUBLIC_FRACTAL_ADMIN_SUPPORT_EMAIL= line in
your env file.

• Made PUBLIC_FRACTAL_ADMIN_SUPPORT_EMAIL static (#391).
• Added SLURM-account selection for user editing and for job execution (#391).
• Improved buttons feedback for slow API calls (#389).