Added SHOP_SHOP_ID option.

1). Most collectives require only one shop at a time, but YBDB provides a way to handle 2 concurrent shops in the same location.  The current shop will be shown, and users will have to remember the number of the previous shop to enter into the transaction.  Note: Remote shops function independently via there IP identification.

Connections/database_functions.php

@@ -60,6 +60,14 @@ $gnucash_accounts = array(	"Assets:Current Assets:Checking" => "checking",
 									"Assets:Current Assets:PayPal" => "credit",
 									"Assets:Account Receivable" => "account_receivable"
 								);
+
+// Most collectives require only one shop at a time, but YBDB provides a way to handle 2 concurrent
+// shops in the same location.  The current shop will be shown, and users will have to remember the 
+// number of the previous shop to enter into the transaction.  
+// Note: Remote shops function independently via there IP identification.
+//
+// Normally, you will want this set at 0.
+define('SHOW_SHOP_ID',0);
 
 // other constants
 define("PAGE_START_SHOP", "/start_shop.php");