Fix some issues with animations, and allow non-looped animations to be defined

src/content_cao.h

@@ -86,6 +86,7 @@ private:
 	v2s32 m_animation_range;
 	int m_animation_speed;
 	int m_animation_blend;
+	bool m_animation_loop;
 	std::map<std::string, core::vector2d<v3f> > m_bone_position; // stores position and rotation for each bone name
 	std::string m_attachment_bone;
 	v3f m_attachment_position;