Fixes

• 2016-08-31 - [Bug] Fixed logic of module 'isInstalled' property detection. #BUG-3801 (Vladimir Semyonov)
• 2016-08-31 - [Bug] DHL & UPS modules: Duplicated requests posted to shipping API server as failed response was not cached. Fixed. #BUG-3802 (Vladimir Semyonov)
• 2016-08-15 - [Bug] Fixed js-error in cloud-zoom lib in IE 11. #BUG-3720 (Vladimir Semyonov)