extract ReVIEW::PDFMaker class from bin/review-pdfmaker
$0 cannot be used in other file
refactoring: extract make_colophon and make_authors from ReVIEW::PDFMaker#get_template
add locale file and use it in PDFMaker#make_colophon
fix make_colophon

* add metadata Contact (Issues #328)
* refactoring
refactoring
add `colophon_order` in ReVIEW::Configure.values
Merge pull request #330 from kmuto/pdfmaker

Refactoring: review-pdfmaker