Adds additional users and items to seed data, adds start of availabilities.
Merge branch 'master' of https://github.com/MarcGarreau/the_pivot into clean-up-host-side-of-confirmations
Cleans up the clean/deny action.
Merge pull request #151 from MarcGarreau/clean-up-host-side-of-confirmations

Clean up host side of confirmations