Production RC2

Second release with fixes identified following the initial public launch.

What's Changed

• Importing changes into repository from internet archive repo. by @digitaldogsbody in #19
• delete unused static files for prod by @mekarpeles in #1
• Fix sound annotation by @hadro in #32
• Add helpers based on item mediatype by @hadro in #33
• Update README.md by @glenrobson in #37
• Update documentation by @hadro in #7
• Rk post meeting fixes by @hadro in #40
• Post meeting fixes by @digitaldogsbody in #22
• Fix pageorder by @hadro in #31
• Fix v2 single image by @glenrobson in #39
• Enable Flask-CORS by default and update Cantaloupe default by @digitaldogsbody in #42

New Contributors

• @digitaldogsbody made their first contribution in #19
• @mekarpeles made their first contribution in #1
• @hadro made their first contribution in #32
• @glenrobson made their first contribution in #37

Full Changelog: production-rc1...production-rc2