progress on moving over to new i18n solution
progress on new i18n stuff
remove unnecessary i18n stuff
new po file generation
Merge branch 'master' of https://github.com/mujin/mujin.co.jp into luke-i18n

Conflicts:
	_i18n/ja.yml
very tedious manual editing of po file
re enable old languages
update jekyll-gettext-plugin
fixes to become-a-website-developer.bash