Default "Autoplay videos" setting to enabled

**Is your feature request related to a problem? Please describe.**

Currently, when the user opens the more-info view on a video (both cameras or video files from the media browser), the user has to then press play to view the video/stream.
The experience is specially bad for cameras, because it plays for half a second, then shows a loading spinner, and then stops. Personally, before finding the autoplay setting, I assumed that this was a bug that was preventing autoplay.

**Describe the solution you'd like**

Make the default behavior to auto-play videos/streams. We can assume that when the user opens the more-info view the intention is to view the video/stream.

**Describe alternatives you've considered, if any**

**Additional context**