Update ProductPage to not allow link existing

Bugfix drag'n drop re-ordering not working
Merge pull request #115 from nhorstmeier/ProductOptions

Update ProductPage to not allow link existing
Update SiteConfig to allow for Cart Validation option
Bug fix ProductPage validation error on initial creation
Merge pull request #119 from nhorstmeier/ProductCreation

Bug fix ProductPage validation error on initial creation
addition of continue browsing button for CartPage.ss - fixes #104

commit bd5b3c6f63127dba033396ad3c96c83366309d47
Author: Jason Korth <jkorth@dynamicdoes.com>
Date:   Mon Jun 23 15:30:56 2014 -0500

    changed cursor to pointer and included foxycart.css to CartPage.ss

commit 879ef59daf96d292de754873a9e307a2aca68442
Author: Jason Korth <jkorth@dynamicdoes.com>
Date:   Mon Jun 23 14:24:50 2014 -0500

    update continue shopping

commit 7a1431820453630354b2e4e9665cad862df6b881
Author: Jason Korth <jkorth@dynamicdoes.com>
Date:   Mon Jun 23 11:56:08 2014 -0500

    addition of continue shopping button
Update ProductPage to validate using getCMSValidator
Merge pull request #121 from nhorstmeier/ProductValidation

Update ProductPage to validate using getCMSValidator
Merge pull request #118 from nhorstmeier/HMACOption

Update SiteConfig to allow for Cart Validation option
Merge pull request #122 from korthjp17/ContinueShopping

addition of continue browsing button for CartPage.ss - fixes #104
foxy cart controller, product page summary fields
product_id in datafeed
order admin
ReceiptLink label
Created OrderAddress data object for order recording
error fix
order address lookup fix
OrderAddress by member lookup
ModelAdmin and class summary and searchable fields