Move 'Delete entire submission' button to bottom of page, before 'Continue to checkout' button
Change 'Describe publication' to 'Your publication' on Review page
Change 'Add and describe data files' to 'Your data files' on 'Submission overview' page
on 'Submission overview' page, make the bold paragraphs blue headings; add formatted reference for data package in 'Your publication' section
on 'Submission overview' page, update headings to 'Your publication' and 'Your data files'; remove semi-colons from headings, which are headings and not p's now
make headings on 'Submission overview' page blue; adjust inter-section whitespace for page