Reason for the change
When creating a new table or database with a hyphen in the name using the admin UI, the following error message is shown:

You can only use alphanumeric characters and underscores for a table's name.

Description
Allow hyphens in table and database names.

Code examples
N/A

Checklist

• I have read and agreed to the RethinkDB Contributor License Agreement

References
resolves #6828