Draw red rects for version/EOL message when 'old versions' selected

Notes:

- These rectangles don't follow the current 'standard' method, which
relies upon specific-sized PNG images. We should probably standardize
on a pure HTML/CSS/SVG solution.

- There are still several flaws to the logic that allow users to
  bypass the restrictions merely by poking at the state system -- it's
  very brittle and it's hard to visualize the program flow.
Merge pull request #19 from colonelqubit/clarify-eol-message

Draw red rects for version/EOL message when 'old versions' selected