Merge pull request #324 from Jeavon/7.1.0-ImageCropper-JeavonWIP

7.1.0 image cropper - fix and basic unit test and new overload GetCropUrl(cropAlias)
GetCropUrl to not use .Url property but get directly from cropper JSON
Merge remote-tracking branch 'origin/HEAD' into 7.1.0-ImageCropper-JeavonWIP