fixed PrefabManager typo bugs, refactored defense and crit chance up powerup, balanced and updated powerup prefabs
Merge branch 'develop' into JackySprint10
updated SurvivalArea prefabs
Merge pull request #77 from jackykschou/JackySprint10

Jacky sprint10
updated powerup prefabs, implementing Survival mode AStar update events
Merge pull request #78 from jackykschou/JackySprint10

updated powerup prefabs, implementing Survival mode AStar update events
updated powerup prefabs to remove Destroy on level ended, refactored PrefabManger
Updated Prefab Positions to make AStar graph smaller (8x Performance Increase on scan), Made SurvivalModeManager Spawn Areas between different locations
Merge pull request #79 from jackykschou/AStarGraphResize

Updated Prefab Positions to make AStar graph smaller (8x Performance Inc...
fixed some pathfinding update logic, updated player character prefab
Merge branch 'develop' into JackySprint10
update gateLocks in SurvivalAreas, updated MainMenu prefab position, fixed pathfinding partial update bug
Merge pull request #80 from jackykschou/JackySprint10

Jacky sprint10
Merge branch 'develop' into PrefabHotFix

Conflicts:
	UnityProject/Assets/Scenes/GameStart.unity
	UnityProject/Assets/Scripts/Constants/PrefabConstants.cs
	UnityProject/Assets/Scripts/Managers/SurvivalModeManager.cs