SCOPING: Ability to export/archive a static version of an experiment, without video recording

Demo should show data collected, and be easily able to be stored & hosted by the researcher.

Right now the code for a particular study (a snapshot of all the code RIGHT NOW, so that future changes don't affect operation of the study) is already bundled up and stored on Google Cloud storage. We need a way for researchers to host this themselves and run it in preview mode, without having to also run ember-lookit-frameplayer / lookit-api, and with some dummy functions overriding usual video recording. This is important to support eventually but can be added at any point.

Start by tracing the existing code path that bundles a study snapshot and stores it in Google Cloud Storage. Then examine how preview mode currently depends on ember-lookit-frameplayer and lookit-api, and define the boundaries for a researcher-hosted export with dummy video-recording functions. Done means the static experiment runs in preview mode without those services.

Written by the indexing model from the issue text.