OPDS - add confirm when file exist in local destination (#3605)
OPDS - add confirm when file exist in local destination (#3605)


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