convert Markdown.Converter.js to unix line ending style
port "edge case with codeblocks in blockquotes" fix from upstream

https://code.google.com/p/pagedown/source/detail?r=c06c6e0d465e2639398c32b0a24a9e4b89503e7a
port markdown fixes from upstream

https://code.google.com/p/pagedown/source/detail?r=4aef59fd15ffc23fad7c81474ea6f3dc94af2fec,
https://code.google.com/p/pagedown/source/detail?r=432d138c39ecf3444ab102b2b54b6106dc0c4b1d,
https://code.google.com/p/pagedown/source/detail?r=8d4f4813346a3f0fd6741fb896d92eeb364bf298
github-style return -> newline markdown

ported from https://code.google.com/r/marcdrexel-pagedown/
Merge branch 'markdown'

http://questhub.io/realm/meta/quest/51c5b5d391ca47a961000036
markdown test
rebuild static