Further color improvements

public/static/css/dark.js

public/static/css/dark.min.css

public/static/css/light.js

public/static/css/light.min.css

public/static/css/local.css

public/static/js/theme.js

public/static/js/theme.min.js

sass/package-lock.json

sass/src/common/index.scss

sass/src/dark/_variables.scss

sass/src/dark/index.scss

sass/src/light/index.scss

scripts/asset-rebuild

templates/_cancelled.html.ep

templates/_checked_in.html.ep

templates/_checked_out.html.ep

templates/_deletion_note.html.ep

templates/_history_stats.html.ep

templates/_invalid_input.html.ep

templates/_public_status_card.html.ep