12/06/2023: Airship bug fixes

🐛 Bug fixes

REST API

1. Remove restriction on group names being 50 characters.

2. Fixed an error on request to get contacts by unique code.

👩‍💻 Emily

Airship Dashboard

1. Fixed a bug where units were missing in dropdown due to pagination

2. Fixed a bug where in the screen to default merge content if someone types a dodgy character it breaks the email send.

👩‍💻 Emily