Add DJVU MIME type to OPDS browser (#5982)
Add DJVU MIME type to OPDS browser (#5982)


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