Added 'hide child cats' checkbox to Widget Options

A helpdesk ticket requested this functionality, and I've had to add it for a customer in the past. Seems like a simple addition and I can't see any drawbacks?
Update Login.php

Changed $_POST to $_REQUEST in the redirect function to allow more flexibility in account processing
Fixed Module loading and docblock scanning system for better resiliency
#2275 Cleaned up gateway code and prefixed classes to prevent namespace conflicts
Merge pull request #2395 from alanmsherwood/master

Allow login redirect URLs to be passed by URL query (and by post) props @alanmsherwood
#2275 updated deprecated call to shopp_safe_redirect()
#2275 Customer -> ShoppCustomer
#2275 Corrected use of Shopp::addmetabox() to ShoppUI::addmetabox()
Merge pull request #2392 from meredevelopment/patch-1

Shopp category widget: allow hiding of child categories. Props: @meredevelopment
Fixed issues with secondary payment method processing
Fixed problems with offsite payment processing due to validation
FreeOrder -> ShoppFreeOrder
PayPalStandard -> ShoppPayPalStandard gateway prefix for namespacing
_2Checkout -> Shopp2Checkout gateway prefix for namespacing
OfflinePayment -> ShoppOfflinePayment gateway prefix for namespacing
PayPalExpress -> ShoppPayPalExpress gateway prefix for namespacing
TestMode -> ShoppTestMode gateway prefix for namespacing
#2275 Purchased -> ShoppPurchased (also caught left over references to Purchase and updated them to ShoppPurchase)