Make movie web

This adds "Make Movie" functionality to the web client.
It should replicate the Insight functionality.

Test on images with sizeT > 1 or sizeZ > 1 or both.

 - Test that Make Movie option is enabled ONLY when a single image with sizeT > 1 or sizeZ > 1 is selected.
 - Check that the Make Movie dialog corresponds to Insight's when the same image is selected.
 - Check that edits to parameters in the UI have the expected effect in the exported movie (check it's the same as Insight).