Apply requested changes

- Remove icon functions from plat.h.
- Fix some indentation problems.
- Remove unused parameter from win_stbar.c
- Rename win_lang.c to win_progsett.c
- Remove stub functions from unix.c
- Move win_load_icon_set() to ui_init()
- Replace the translated texts to English, and let the translators translate them
- Fix the control IDs in dialogs.rc.
- Use the requested solution in win_icon.c for setting the array variables.

src/unix/unix.c

@@ -1245,31 +1245,6 @@ plat_language_code_r(uint32_t lcid, char* outbuf, int len)
     return;
 }
 
-void 
-plat_clear_icon_set()
-{
-	return;
-}
-
-void
-plat_system_icon_set()
-{
-	return;
-}
-
-void 
-plat_load_icon_set()
-{
-	return;
-}
-
-void
-plat_get_icons_path(char* path_root)
-{
-	return;
-}
-
-
 void joystick_init(void) {}
 void joystick_close(void) {}
 void joystick_process(void) {}