Rename SVGs and buttons as independent vars with big-endian conventions.
Fix bug in initial display of 24-hour marks and 13-moon marks.
Fix bug in mis-display of marks when toggling calendar while marks hidden.
Fix initialization of DST.
Add favicon.
Add style & function to disable DST button if not DST in locality ever.
Nix 'focus' styles.
Fix bottom-padding quirk for side div in Firefox.
Extend hands' length to begin just before center.
Add slight border to hands.
Add fading shade-cover to main content when toggling side content.
Toggle side-btn icon between '?' and 'X'.
Merge branch 'master' into deployment
Merge style changes.