Visual design bugs

[hobuobi]

See here for full details and screenshots: https://www.figma.com/file/66HyjH0efZMoAuTlhnojWh/Justice-Counts-Report?node-id=964%3A712

List of fixes:

• Color of headers (currently #000) should be #132536
• Background color for tooltips should be #082249
• Color of "Courts" and "Corrections" labels should be #B8BFC6
• Color of "Not Available" headers and other text should be #808C99
• Margin on mobile cuts off some content (see screenshot in Figma)
• Orange links in tooltips should not be double-underlined when active (see screenshot)

@agr0n for any further details and clarifications.

[nasaownsky]

Also, some of the issues are already fixed. Maybe you having old version, @hobuobi? Anyway I created PR, so take a look.