-Work on addon editor plugin (disabled by default)

-New HTTPRequest node, to make HTTP requests simpler.

scene/gui/link_button.h

@@ -0,0 +1,40 @@
+#ifndef LINKBUTTON_H
+#define LINKBUTTON_H
+
+
+#include "scene/gui/base_button.h"
+#include "scene/resources/bit_mask.h"
+
+class LinkButton : public BaseButton {
+
+	OBJ_TYPE( LinkButton, BaseButton );
+public:
+
+	enum UnderlineMode {
+		UNDERLINE_MODE_ALWAYS,
+		UNDERLINE_MODE_ON_HOVER
+	};
+private:
+	String text;
+	UnderlineMode underline_mode;
+
+protected:
+
+	virtual Size2 get_minimum_size() const;
+	void _notification(int p_what);
+	static void _bind_methods();
+
+public:
+
+	void set_text(const String& p_text);
+	String get_text() const;
+
+	void set_underline_mode(UnderlineMode p_underline_mode);
+	UnderlineMode get_underline_mode() const;
+
+	LinkButton();
+};
+
+VARIANT_ENUM_CAST( LinkButton::UnderlineMode );
+
+#endif // LINKBUTTON_H