Additional Functionality to 3 Plugins

This is a continuation of work from previous projects. The requirements are as follows: OpenCart: ------------- 1. Adding Option for Multiple EventIds based on product and product groups/categories 2. HTTP link for exported feeds 3. Rechecking all the codes to make it ready for a package 4. Branding and Packaging the plugin 5. Additional Fields in Exported feed 6. Hosting the plugin on Exension Store Shopify: ------------- 1. Adding Option for Multiple EventIds based on product and product groups/categories 2. HTTP link for exported feeds 3. Rechecking all the codes to make it ready for a package 4. Branding and Packaging the plugin 5. Additional Fields in Exported feed 6. Style the Shopify plugin installation page to match with Webgains website 7. Hosting the plugin on Shpify App Store Magento: --------------- 1. Adding Option for Multiple EventIds based on product and product groups/categories 2. Rechecking all the codes to make it ready for a package 3. Branding and Packaging the plugin 4. Additional Fields in Exported feed 5. Hosting the plugin on Magento Connect