Added libbe, ICU and consoled to the image.

The boot script now launches consoled instead if app_server does not
exist, so there is now an interactive Bash prompt! libbe requires ICU,
which is an optional package, so I've built the packages and they've
been uploaded to haiku-files.org (thanks umccullough).

data/system/boot/Bootscript

@@ -93,6 +93,12 @@ fi
 
 # Launch servers
 
+# If app_server doesn't exist, just run consoled.
+if [ ! -f "/boot/$SERVERS/app_server" ]; then
+	/bin/consoled
+	exit
+fi
+
 # We must wait for the app_server and registrar to be ready
 launch $SERVERS/registrar _roster_thread_	# launch registrar