Merge branch 'master' into Dirtybit

# Conflicts:
#	include/Engine/Rendering/ExplosionEffectJob.h
#	src/Game/Systems/ExplosionEffectSystem.cpp

include/Game/Systems/ExplosionEffectSystem.h

@@ -3,6 +3,7 @@
 
 #include "Common.h"
 #include "Core/System.h"
+#include "Engine/GLM.h"
 
 class ExplosionEffectSystem : public PureSystem
 {

include/Game/Systems/MainMenuSystem.h

@@ -24,6 +24,7 @@ public:
 private:
     IRenderer* m_Renderer;
     void OpenSubMenu(const Events::InputCommand& e);
+    void OpenDropDown(const Events::InputCommand& e);
 
     EventRelay<MainMenuSystem, Events::ButtonClicked> m_EClicked;
     bool OnButtonClick(const Events::ButtonClicked& e);
@@ -36,6 +37,7 @@ private:
 
     std::string m_CurrentCommand = "";
     EntityWrapper m_OpenSubMenu = EntityWrapper::Invalid;
+    EntityWrapper m_DropDown = EntityWrapper::Invalid;
 
 };