Change the Lootsystem for landscape

[Oelle]

All what have to be done is removing T7 essences out of the loottable after ostgiliath and perhaps make the LI-drops class specific.
That´s all and it temoves a lot af #### outof the loot.

I'd prefer T8 Essences in lvl105 content, too. And getting LI-Tokens like in Moria (and much less than LI today) instead of the endless spam would be great. Or just shards as LI can be bought at the relicmaster afaik.
However, thats just a change in loottables, not a change in the system how loot gets distributed. I want the latter.