Merge branch 'development' into cmake/SPEC-7484

Signed-off-by: Esteban Papp <81431996+amznestebanpapp@users.noreply.github.com>

# Conflicts:
#	Code/Editor/ConfigGroup.cpp
#	Code/Editor/ControlMRU.cpp
#	Code/Editor/CryEdit.cpp
#	Code/Editor/CryEdit.h
#	Code/Editor/IEditorImpl.cpp
#	Gems/EMotionFX/Code/EMotionFX/Tools/EMotionStudio/Plugins/StandardPlugins/Source/AnimGraph/GameController.cpp

Code/Editor/ConfigGroup.cpp

@@ -48,7 +48,7 @@ namespace Config
             }
         }
 
-        return NULL;
+        return nullptr;
     }
 
     const IConfigVar* CConfigGroup::GetVar(const char* szName) const
@@ -63,7 +63,7 @@ namespace Config
             }
         }
 
-        return NULL;
+        return nullptr;
     }
 
     IConfigVar* CConfigGroup::GetVar(uint index)
@@ -73,7 +73,7 @@ namespace Config
             return m_vars[index];
         }
 
-        return NULL;
+        return nullptr;
     }
 
     const IConfigVar* CConfigGroup::GetVar(uint index) const
@@ -83,7 +83,7 @@ namespace Config
             return m_vars[index];
         }
 
-        return NULL;
+        return nullptr;
     }
 
     void CConfigGroup::SaveToXML(XmlNodeRef node)