Alpha 14: Ghosts, Ghouls and Goblins

New Features:
-Added some major variations to the Undead to have levels and armour model variations.
-Enemy Spawning system has been changed to deal with spawning parties/gangs of which the undead is now one.
-Added warning systems for incoming visiting parties (hostile or not).
-Added a knight which can visit the village during Summer.
-Added a rotation hint billboard when placing buildings.
-Added Categories to the notifications menu.
-New transition effect when changing to the thermal view.

Balance Changes:
-Enemies now spawn using a new ticket system which should allow for larger variations for generating an attack, but should hopefully be more balanced.
-Fixed an issue with crafting resource priority being inversed.
-Firewood is now deducted over time based on weather, instead of on day/night change
-Firewood is now faster to produce but costs more logs

Bug Fixes:
-Made the enemy UI draggable like the goblin version.
-Trader is now a goblin that visits the village, removed old UI button.
-Minor color tweaks to the thermal view.
-Changed the look of the selection shader, deals with the depth of the scene better.
-Fix for a bug related to disease duration despawning corpses once completed.
-Restored bounce animation for the building button during tutorials.
-Fix for enemies sliding in attack animation.