The rationale behind this is that if the user wants to report violent media,
they might not want to see it repeatedly. The “sensitive” property is still
kept, displaying different messages for hidden media depending on whether
they are marked as sensitive.
Port the display part of the following commits to glitch-soc:
* 90f12f2e5a41115a9a756f9dd38054736080d4f9
* b170627ceb8838c358aef1fcca9673ce4aa61ab8
* 11697d68942db7b97a4c7384e4fb4148a97b9122
* 56eb5c3f344f0342ac6f26a05748bc21c585a729
Port the video-player part of 036dd98abb1fe6ae1d25ff0f3ecffe4dd9a79ea3 to
glitch-soc. MediaGallery part ignored since it has diverged quite a bit.
This fixes#423
