trap for translators in footnote mode
put quotes around 'entry' content in citedRange and test for target attribute, wrapping citedRange text content in an html link if present; fixes #42; earlier commits in this branch also: fix #50 and fix #51
handle book sections in the bibliographic listing; fixes #74
Merge pull request #78 from srophe/bibup

Bibup: bibliographic enhancements for first milestone