Manage Exhibitors: Add exhibitor with External booth

Under Manage Exhibitors, Admins can now add Exhibitors who wish to use their own 3^rd party booth (Link to website or other booth URL) instead of a booth on Elevate. This allows the admin to create the exhibitor, upload their logo and external link to their booth so their booth tile can be displayed as part of the exhibit hall just like Exhibitors with booths created in Elevate. External Exhibitors have no exhibitor managers nor can they be sent emails from the “emails to exhibitors” tool.