Enhanced the watermark feature. Disabled the ability to add children Categories of children Categories for the sake of organization and preventing User error/confusion. Updated the Date field to automatically be set to today's date unless selected otherwise. Fixed the missing download link in the emails that are sent out. Fixed an issue where the watermark was being cached on the Settings page so some Users would see an old version of their watermark. Added pagination to the Variation Groups page. Fixed a few "under the hood" bugs. Enhanced the upload process to avoid errors on servers with limited resources. Updated some of the icons to use native WordPress Dashicons.

git-svn-id: https://plugins.svn.wordpress.org/bulk-photo-to-product-importer-extension-for-woocommerce/trunk@947169 b8457f37-d9ea-0310-8a92-e5e31aec5664