[Console] Remove the delay after pressing ESC key

The env variable ESCDELAY specifies the time in ms which ncurses waits
for a character sequence. With a default value of 1000, it produces a
1 second delay when pressing the ESC key to close dialogs.

Set this variable to 0 to get instant respons when pressing ESC.

deluge/ui/console/main.py

@@ -13,6 +13,7 @@ from __future__ import print_function
 import argparse
 import locale
 import logging
+import os
 import shlex
 import sys
 

deluge/ui/console/modes/alltorrents.py

@@ -51,7 +51,6 @@ You can scroll a popup window that doesn't fit its content (like \
 this one) using the up/down arrows, PgUp/PgDown and Home/End keys.
 
 All popup windows can be closed/canceled by hitting the Esc key \
-(you might need to wait a second for an Esc to register) \
 or the 'q' key (does not work for dialogs like the add torrent dialog)
 
 The actions you can perform and the keys to perform them are as follows: