Mark metadata sections instead of removing them
Implement skip state, which enables skipping all metadata sections
Add 'andre titler' and 'forord' to the metadata blacklist
Merge branch 'master' into skipintro
Address review comments
Add 'indhold' as a meta-content field
Don't skip copyright disclaimer
Merge pull request #592 from saebekassebil/skipintro

Fix #581 by implementing "skip state" that skips all meta-content sections the first time a book is played