package.json: Remove coverage reporter from "npm test", fixes wrong line numbers in stack traces.
scoresheet: Fix code alignment, no functional changes.
scoresheet: Fix test: crash in discard(), wrong signature.
fs: Add 'list' functionality, to obtain directory listings (#75).
scores: Add version to storage and put scores in property to allow storing meta data too (#75).
scoresheet, scores: Move $scores updating out of scoresheet, add button for manual polling (#75).