The blob can now switch its core location with a node, which will shift both of their locations.
Changed the relocate power cost to 80.
Merge branch 'master' of https://github.com/tgstation/-tg-station into blob_switcharoo

Conflicts:
	code/game/gamemodes/blob/powers.dm
Merge pull request #3175 from Giacom/blob_switcharoo

The blob can now switch its core location with a node, which will shift both of their locations.