Create fr translation + Translate index.html
Translate fr installation/deploy.md,index.md,linux.md + Replace all example_translation to fr
Update config to add french
Include more information to not translate Ghost yet
Fix link to troubleshooting tips
Remove translation chapter from translations
translate usage to zh

translate usage to zh
FR: correct few mistakes (thanks to @soyuka)
FR: now up-to-date with 8e44fa9
Started German translation
Translate Installation & Mail to German and apply updates
Translate Themes Doc to German
Fixed some small mistakes
Fixed tiny mistake
Fixed tiny mistake
Fixed tiny mistakes
Fixed tiny mistakes
Fixed tiny mistakes
mention to change GHOST_HOST variable in init-script
mention that sudo might be necessary to execute commands