[doc] gettext developer docs
[doc] gettext developer docs

Frenzie/koreader,poire-z/koreader,poire-z/koreader,pazos/koreader,mwoz123/koreader,mihailim/koreader,koreader/koreader,Markismus/koreader,Hzj-jie/koreader,Frenzie/koreader,koreader/koreader,NiLuJe/koreader,NiLuJe/koreader