door util "crash"

[Maverick]

 Krazie <ER>> here
 Krazie <ER>> watch
 Krazie <ER>> this is !load doors
  Zizzo <ER>> :)
     UtWorky> 3ÔÓÖË
 Krazie <ER>> now !doorlist
     UtWorky> :D
 Krazie <ER>> now !door off
8:RoboBot6> Uncaught exception in utility; all utilties unloaded.  See log for details.
   MMaverick> error
 Krazie <ER>> bingo
   MMaverick> hm ok
   MMaverick> lets write that down :)
 Krazie <ER>> let me try !door on aswel
     UtWorky> HMM
 Krazie <ER>> reloading util
     UtWorky> :)
    John Law> hosting at all?
8:RoboBot6> Uncaught exception in utility; all utilties unloaded.  See log for details.
   MMaverick> what does !doorlist do anyway ?
 Krazie <ER>> that was !door on
 Krazie <ER>> !doorlist is suppose to list what doors you have i guess
 Krazie <ER>> what door commands you have enabled.

[alinea]

"on" isn't a valid door mode (has to be -2 to 255 or an 8-digit binary string, eg: 10111011) I've updated the code so that it properly catches the number format exception and lets the user know this. Also, the !door command in the doors utility has been renamed to !doormode. A near identical (functionality wise) !door command already exists in the standard multibot utility which is auto-loaded, so it was double processing the !door command.