+ sentences and paragraphs to metadata section

first pgph on what metadata is, few specifics.
added some citations to the metadata section

Michener 1997
Zimmermand 2003
deleted notes for metadata section, expanded paragraphs
added more refs and paragraphs to metadata section
added reichmann and whitlock refs to metadata section
adding paragraphs to the quality control section
delete notes and expand paragraphs in quality control section
added citation Lampe 1998 to quality check section
added a sentence on imp. of having metadata to metadata section
added a ref to the metadata section - Fraser & Gluck 1999
Changes the formatting on standard_format_errors.pdf to show the errors more clearly.