Merge branch 'release/v4.0.0'

Merge branch 'release/v4.0.0'

* release/v4.0.0: (24 commits)
  4.0.0
  Update rollup
  Fix eslint warnings and errors
  Update eslint
  Add package-lock.json
  Update Swedish translation
  Automated translations
  Merge some updated override translations
  Use new icons for the popup, play/pause
  Link directly to change shortcut keys in chrome
  Style options page
  Display shortcut keys in a table
  Invert share icons
  Options tab order, add link to Talkie Premium
  Switch Firefox/WebExtensions Talkie Premium link
  Improve translations, SEO
  Lock down connections from other extensions/apps
  Tighter content security policy (CSP)
  Style the options page
  Remove donations
  ...