dodate izmene u model
Merge branch 'master' of https://github.com/stefanpetrovic/ITEH
Sredjenja paginacija, dodat eksterni web servis
Merge branch 'master' of https://github.com/stefanpetrovic/ITEH
Upload slika kompletiran, zavrsena bezbednost
Merge branch 'master' of https://github.com/stefanpetrovic/ITEH