Made Thaumcraft 4 a direct download from the internal repo

His new blanket perms (with caveat) and the release of Thaumcraft 4.1 made this necessary to do now.
Licence corrections

JourneyMap doesn't like you hotlinking directly to the adf.ly anymore (really?) so I've moved the browser link to their preferred location as a courtesy.

We have Chococraft perms again and I never actually corrected that, so here we go.