Unfreezing the code for 2022 with Unlisting data files, mailer improvements and more.

This release brings the option to unlist specified data files from the site navigation. Also included are a number of minor features and bug fixes.

Features:

• Added option to unlist data files from the site navigation
• Tidied up mailers to align with the 2021 UI Improvements
• Added support for Hugo publishDir config

Fixes:

• Fixed layout of the Inbox navigation menu
• Fixed issue exporting Inbox to CSV
• Fixed default value for select type inputs when using allow_empty
• Fixed issue uploading files on image inputs when using a custom upload directory
• Default to use an existing branch when syncing a new site to a repository
• Fixed issue refreshing the syncing logs when creating a new site using local files
• Fixed wording around payment credits
• Added full billing address to invoices
• Fixed potential XSS vector