Add messageboard graphics and arch and use them

Patch #416 by Saiapatsu
https://sourceforge.net/p/crossfire/patches/416/

readable/messageboard.arc

@@ -0,0 +1,40 @@
+Object messageboard
+name message board
+msg
+This is a public message board. If you don't know how to use it, say help.
+endmsg
+face messageboard.111
+type 98
+subtype 38
+activate_on_push 1
+activate_on_release 1
+no_pick 1
+client_type 25021
+arch messageboard_say_event
+end
+end
+
+Object messageboard_red
+name Petitions for the DMs
+msg
+This board is for leaving messages for the DM. If you don't know how to use it, say help.
+endmsg
+face messageboard_red.111
+type 98
+subtype 38
+activate_on_push 1
+activate_on_release 1
+no_pick 1
+client_type 25021
+arch messageboard_say_event
+end
+end
+
+Object messageboard_say_event
+title Python
+slaying /python/IPO/board.py
+type 116
+subtype 6
+face event_say.111
+invisible 1
+end

readable/messageboard.face

@@ -0,0 +1,8 @@
+face messageboard.111
+magicmap brown
+visibility 40
+end
+face messageboard_red.111
+magicmap red
+visibility 40
+end