Viewer: Wrong resolution handing

[larsll]

In the viewer the dimensions of a stream is only done in browser / but stream from backend is still original size as the request URL is not updated. This means that more bandwidth than required is utilized.

Reproduce:

• Open the viewer (default port 8100)
• Open inspector (Ctrl + I); look at network tab
• Change the width from 480 to 320; see that the image(s) are smaller
• See that the stream URL is still having width 480

Expected:

• Stream URL should refresh with width 320 so that picture is resized server-side.

Also: With compression the behaviour is correct; the quality variable is changed as expected.