Send2ebook fix download after refactor from #3924  (#4027)
Send2ebook fix download after refactor from #3924  (#4027)

* fix send2ebook download after refactor from #3924

* restore removal from server

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