Jamstack Survey follow-up tasks

[zachleat]

• Smooth scrolling for anchor links
• Hide the Community Survey links in the sidebar if the survey is not the active page
• Bubble chart zero-lines should be bold
• Graph labeling issues from @seldo Jamstack Survey #656 (comment)
• Color consistency between same entries on different graphs via @justin-netlify Jamstack Survey #656 (comment)
• Tweet this graph buttons
• Fix overflow on wider table data (should be scroll pane, not body overflow)
• Small viewport overflow
• Some of the small viewport chart labels are overlapping

[seldo]

In the google doc version of the site you can see that the quadrant graphs (the ones where we need to move the 0-lines) also have different shading in each quadrant to make them more obvious. This would be a nice to have.

Likewise, the usage/satisfaction graphs have a shading on the block below the 1.0 mark to indicate that's a bad area, and this also is a nice to have.