Improvements and Fixes

• Added the ability for internal admin users to delete other internal users.
• Added roles for client users. If many clients are associated with the same organization the Admin and Staff roles can be used to give people on a team the right permissions.
• Improved the clarity of the text in the settings menus.
• Fixed a UI bug on the Files page which led to multiple dividers being shown.
• Fixed a UI bug on the messages dropdown.
• Fixed a bug where deleting a client user logged out some internal users.
• Fixed a bug where new lines didn't appear correctly on Messaging.