FIXED:
- Fixed an issue with snapshot builds not able to login because of wrong appRedirectScheme for OAuth authorization.
- Fixed an issue with logging in for readeck version 0.23 or later. "readerSettings" property is now optional.

CHANGED:
- Changed the way unread bookmarks are determined. The behavior now matches that of the Readeck web app. This means that unread bookmarks are bookmarks that have not been archived. Closes #166 and #169.

REMOVED:
- Removed the menu options for marking bookmarks as read. Now, all not archived bookmarks are displayed as unread.
