This is a first attempt of getting the season pack downloading to work.
Unfortunately some of the old code I modified is still not 100% clear to me.. so I can't really oversee if this will work. That's why I suggest, this should be extensively tested, before merging into master!

I broke backlog searching.. Should be working again.

Tested, and seems to be working fine!
Merge pull request #825 from KontiSR/fix_seasonpacks_testpls

Season pack fix attempt #1