escape_url caused http://en.wikipedia.org/wiki/Web_application to be escaped as http://en.wikipedia.org/wiki/Webundefinedapplication, caused by a missing "return" statement. Fixed.
escape_url caused http://en.wikipedia.org/wiki/Web_application to be
escaped as http://en.wikipedia.org/wiki/Webundefinedapplication, caused
by a missing "return" statement. Fixed.

egh/zotero-better-bibtex,davepwsmith/zotero-better-bibtex,gracile-fr/zotero-better-bibtex,gracile-fr/zotero-better-bibtex,maxxk/zotero-better-bibtex,egh/zotero-better-bibtex,egh/zotero-better-bibtex,davepwsmith/zotero-better-bibtex,egh/zotero-better-bibtex,maxxk/zotero-better-bibtex,maxxk/zotero-better-bibtex