BK-921 Filenames of images imported from EPUB should get their names slugified
BK-921 Filenames of images imported from EPUB should get their names slugified

ride90/Booktype,kronoscode/Booktype,danielhjames/Booktype,danielhjames/Booktype,rob-hills/Booktype,sourcefabric/Booktype,okffi/booktype,rob-hills/Booktype,sourcefabric/Booktype,olegpshenichniy/Booktype,ride90/Booktype,ride90/Booktype,danielhjames/Booktype,eos87/Booktype,danielhjames/Booktype,MiczFlor/Booktype,MiczFlor/Booktype,kronoscode/Booktype,MiczFlor/Booktype,okffi/booktype,btat/Booktype,rob-hills/Booktype,btat/Booktype,danielhjames/Booktype,ride90/Booktype,eos87/Booktype,kronoscode/Booktype,sourcefabric/Booktype,btat/Booktype,MiczFlor/Booktype,okffi/booktype,MiczFlor/Booktype,olegpshenichniy/Booktype,sourcefabric/Booktype,eos87/Booktype,olegpshenichniy/Booktype,btat/Booktype,eos87/Booktype,eos87/Booktype,olegpshenichniy/Booktype,ride90/Booktype,okffi/booktype,sourcefabric/Booktype,olegpshenichniy/Booktype,okffi/booktype,kronoscode/Booktype,rob-hills/Booktype,kronoscode/Booktype