Fix: Always apply navigation javascript to switch all different options without the requirement of enabling the next/back button.
Remove useless space on left if back/forward buttons are not enabled
Merge branch 'pr/158'

* pr/158:
  Remove useless space on left if back/forward buttons are not enabled
  Fix: Always apply navigation javascript to switch all different options without the requirement of enabling the next/back button.
Always show user information (thanks @se-bastiaan, fixes #151, fixes #157)
Remove 'hole' from thumbs up/down images for mini player (fixes #160)
Clarify "hide dock icon", prevent full screen when dock icon hidden (fixes #152, fixes #153)
Allow styles to set a title color (fixes #135)
Use separate cookie storage by default
Add preference tab for privacy/cookies, implement clearable cookies
Implement preferences to use Safari's cookies, disable saving of cookies (fixes #7)
Merge branch 'cookies'

* cookies:
  Implement preferences to use Safari's cookies, disable saving of cookies (fixes #7)
  Add preference tab for privacy/cookies, implement clearable cookies
  Use separate cookie storage by default
Fix for pre-10.9 NSColor API
Separate cookies only allowed on 10.9+, sorry :(