remove sidebar and make panels popup

src/node_scroll.h

@@ -9,11 +9,14 @@ class NodeScroll : public NodeBorder
     glm::vec2 m_offset_start = glm::vec2(0);
     glm::vec2 m_offset = glm::vec2(0);
     glm::vec2 m_mask = glm::vec2(1, 0);
+    glm::vec4 m_scrollbar_color = { .3, .3, .3, 1 };
 public:
     NodeScroll();
     virtual Node* clone_instantiate() const override;
+    virtual void clone_copy(Node* dest) const override;
     virtual kEventResult handle_event(Event* e) override;
     virtual void draw() override;
     virtual void on_tick(float dt) override;
+    virtual void parse_attributes(kAttribute ka, const tinyxml2::XMLAttribute* attr) override;
     void fix_scroll();
 };