Big changes in code of clients, screens and widgets.

- Moved and altered code to create, destroy and manipulate clients, screens
  and widgets in an OO-like manner.
- Moved command execution code to a commands directory, splitting commands to
  what subject they are concerned.
- Menus are temporary disabled while working on new menu structure.

server/render.h

@@ -17,7 +17,6 @@
 #define HEARTBEAT_OFF 0
 #define HEARTBEAT_ON 1
 #define HEARTBEAT_OPEN 2
-#define HEARTBEAT_SLASH 3
 
 #define SERVER_SCREEN_NEVER 0
 #define SERVER_SCREEN_NOSCREEN 1
@@ -26,17 +25,21 @@
 #define BACKLIGHT_OFF 0
 #define BACKLIGHT_ON 1
 #define BACKLIGHT_OPEN 2
-#define BACKLIGHT_NOTSET 3
 
 #define BACKLIGHT_BLINK 0x100
 #define BACKLIGHT_FLASH 0x200
 
+#define CURSOR_OFF 0
+#define CURSOR_DEFAULT_ON 1
+#define CURSOR_BLOCK 4
+#define CURSOR_UNDER 5
+
 extern int heartbeat;
 extern int backlight;
 extern int backlight_state;
 extern int backlight_brightness;
 extern int backlight_off_brightness;
 extern int output_state;
-int draw_screen (screen * s, int timer);
+int draw_screen (Screen * s, int timer);
 
 #endif