ENHANCEMENT: move initial/boot peers list to config

[kfo2010]

PROBLEM:
sanity.php ...
$f = file("https://www.arionum.com/peers.txt");

This makes the peers list dependent on a central domain arionum.com. The nodes should not be dependent on any calls to arionum.com.

SOLUTION:
Create an array in the main config file to allow someone to enter a list of known/custom peers. The sample config would have whats listed in https://www.arionum.com/peers.txt but would allow a user to change them.

CAVEATS:
Since users configs are not overwritten by updates, i think it does make sense to use https://www.arionum.com/peers.txt for now as the backup for a user that does not have this new config array set. The default should be to use the central domain but allow user to override it in config with custom list.

[owenvoke]

Starting development on this.

Relevant lines:

node/sanity.php

Lines 268 to 277 in 754017f

	if ($total_peers == 0 && $_config['testnet'] == false) {
	$i = 0;
	echo "No peers found. Attempting to get peers from arionum.com\n";
	$f = file("https://www.arionum.com/peers.txt");
	shuffle($f);
	// we can't connect to arionum.com
	if (count($f) < 2) {
	@unlink("tmp/sanity-lock");
	die("Could not connect to arionum.com! Will try later!\n");
	}