Shimmering Skies

1.7 - Minor Refinements
* Pushed the Underground down 30 blocks for a more "fair" Fishron fight. (this was the big reason for the update).
* Lowered the islands slightly to compensate for the above change.
* Enabled the Celebrationmk10 secret seed to allow removal of just 2 things from the corruption chest.
* Also removed the yellow solution as mobile and console are now at parity with the sand recipes hotfix.
* Swapped the cloud and crumble brick for gray painted leaves. It looks better AND is less useful. Idea stolen from a Duck.