change quote to Library.quote, fixes LaTeX \isarchardoublequote problem.
change quote to Library.quote, fixes LaTeX \isarchardoublequote problem.

MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle