Release/1.9.1

Version 1.9.1 of the module 

- Store category configuration 
- Little fixes
- UI / UX Remodeling 
- Synchronisation of orders from PS to eBay (status)
- Promotional prices (on eBay.co.uk and ebay.de)
- Logs
- Immediat payment

Thoma
Ok for structure. 
When adding the functionnality of fancybox (version 1.6 of eBay, November 2013), we struggled to use the default fancybox library on all versions of prestashop, and as we wanted to avoid all the version_compare because even for different 1.4 the result was not the same, we decided to include our own jquery and fancybox