Prevent Sturdy and Life Orb on same set in randoms

It effectively negates the ability to have both together.
Merge pull request #725 from Relados/patch-19

Prevent Sturdy and Life Orb on same set in randoms
NEXT: nerf Snore, give Unown Shadow Tag
NEXT: unban Genesect
Merge remote-tracking branch 'upstream/master'