April 7: Improvements and fixes

Improvements and fixes

• Improved the design of the checkout flow.
• Improved the performance of the billing page by removing an extra refresh.
• Updated fonts and colors for modals across the product.
• Fixed a bug where connecting a dashboard results in no channel being selected.
• Fixed a bug where radio buttons switch to checkboxes for forms that have been submitted.
• Fixed copy on various initial state pages.