Media operations not working when using image:// stream

[bperry11]

After upgrading to 1.7.14 some markdown I had in 1.6 stopped working

![Church Greeter Smiling](image://greeter-2.jpg?cropZoom=350,400)

Pulling the image from the user/images folder the cropZoom would not work.

Looks like the html would render as

src="/user/images/greeter-2.jpg?cropZoom=300,450?cropZoom=300,450"

and the image would not be cropped.

Work around was to copy image to page folder and not use the php stream.

[mahagr]

@bperry11 Should be an easy fix, please check my commit and report back.

[mahagr]

Also, the fix should allow any other stream to be used. :)