Reorganize Project Settings

-Advanced Settings toggle also hides advanced properties when disabled
-Simplified Advanced Bar (errors were just plain redundant)
-Reorganized rendering quality settings.
-Reorganized miscelaneous settings for clean up.

editor/editor_sectioned_inspector.h

@@ -51,6 +51,8 @@ class SectionedInspector : public HSplitContainer {
 
 	String selected_category;
 
+	bool restrict_to_basic = false;
+
 	static void _bind_methods();
 	void _section_selected();
 
@@ -65,6 +67,7 @@ public:
 	void set_current_section(const String &p_section);
 	String get_current_section() const;
 
+	void set_restrict_to_basic_settings(bool p_restrict);
 	void update_category_list();
 
 	SectionedInspector();