Hide mode and autoplay buttons if 2up is not available.  See https://bugs.edge.launchpad.net/gnubook/+bug/394525
Hide mode and autoplay buttons if 2up is not available.  See https://bugs.edge.launchpad.net/gnubook/+bug/394525

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