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/main.h

@@ -17,8 +17,6 @@
 #include "config.h"
 #endif
 
-#include "render.h"
-
 /*
   contains a few things that other parts of the program might want
   to know about...
@@ -35,11 +33,6 @@ void exit_program (int val);
 /* But I plan to double the framerate soon, or make it variable...*/
 /*#define TIME_UNIT (125000/2)*/
 
-typedef struct screen_size {
-	char *size;
-	int wid, hgt;
-} screen_size;
-
 #define DEFAULT_SCREEN_PRIORITY 128
 #define DEFAULT_SCREEN_DURATION 32
 #define DEFAULT_HEARTBEAT HEARTBEAT_ON