Add header/footer detection
Add header/footer detection

brisandbeans/bookreader,gootdude/bookreader,garyrh/bookreader,garyrh/bookreader,gootdude/bookreader,internetarchive/bookreader,internetarchive/bookreader,Islandora/internet_archive_bookreader,niksu/bookreader,gootdude/bookreader,yankl/bookreader,brisandbeans/bookreader,garyrh/bookreader,Islandora/internet_archive_bookreader,garyrh/bookreader,yankl/bookreader,brisandbeans/bookreader,brisandbeans/bookreader,nikolas/bookreader,openlibrary/bookreader,openlibrary/bookreader,openlibrary/bookreader,niksu/bookreader,niksu/bookreader,openlibrary/bookreader,Islandora/internet_archive_bookreader,garyrh/bookreader,nikolas/bookreader,yankl/bookreader,Islandora/internet_archive_bookreader,openlibrary/bookreader,brisandbeans/bookreader,Islandora/internet_archive_bookreader,niksu/bookreader,yankl/bookreader,gootdude/bookreader,niksu/bookreader,yankl/bookreader