Mobile - Recipient Registration form flow

[corwintines]

To do

• "Next" button should be on the right at all times
• Scrolling to bottom should not lift nav bar
• ProgressBar should be sticky to top
• Edge case: long string bring placed in markdown field will render off screen
• Placeholder for URLS changed from example to ex
• Full width buttons in Upload
• Funding address layout improvement
• address shortened for mobile when transaction submitted

[samajammin]

In addition to the styling here please investigate the logic - I'm not sure if we implemented a separate component or what for the mobile navigation. I believe we do share logic across the FormNavigation component but I'm not positive.