Massive changes. Added a quite nice webinterface with live data using WebSockets. Removed the FTP server (wasn't that useful anyways). JSON creating using ArduinoJson instead of String concatenation. Ans, and, and.

include/playlist_manager.h

@@ -1,14 +1,18 @@
 #pragma once
 
 #include <map>
+#include <vector>
 #include "playlist.h"
 
 class PlaylistManager {
 private:
 	std::map<String, String> _map;
 	std::map<String, Playlist*> _playlists;
+	std::vector<String> _unmapped_folders;
 public:
 	PlaylistManager();
 	Playlist* get_playlist_for_id(String id);
+	Playlist* get_playlist_for_folder(String folder);
 	void dump_ids();
+	String json();
 };