Add a frame range option to the client site

The client site should support viewing versions in full-range, cut-in/cut-out and without slate.

There should be a playlist option to allow the client to change the frame range as well as set the default.

As an example, when I'm sharing the playlist with a client, I can set it to play without the slate by default or I can lock it so that the client can't change it and always views it without the slate