Item Nodes and Small Fixes

Created spawn nodes for items
-added 3 to shed for now
-far left has shovel as restricted item(won't spawn shovel)
-shovel and a gate key are only items generated this way for now

fixed issue with key ring and energy bar being red if gui closed while
hovering on one of them

added temp energy bar 'meter' to gui, color is red, yellow, green based
on sanity level

fixed crouch height to match new player scale