Additional fix needed for https://webarchive.jira.com/browse/ARI-3745

It looks like some urls still aren't being rewritten from https to http in proxy mode. These are urls that are escaped. For example, in https://wayback.qa-archive-it.org/4311/20140421185901/https://www.flickr.com/photos/britishart/, there is "https:\\/\\/s.yimg.com\\/pw\\/combo\\/1\\/3.11.0?".

My fix works but I think there is a better way than just adding a new constant and referencing that to determine if replay is supported. I added the new constant because I didn't want to break any existing functionality. Feel free to reject this request and create a better solution.