Move away from middleware and instead update video quality
when the selected video quality updates in redux. This also
lead to removing of automatically exiting audio only because
with the change it's not so readily possible to tell if the
user switched off audio only by re-selecting the already
preferred video quality. Removing this automagic removed
some additional checking done for mobile.
- "preferred" is being appended because in tile view there is a
concept of what the user prefers to be the maximum video quality
but there is also a maximum respected internall. For example,
the user may prefer HD, but in tile view the tiles may be small
so internall the preferred would be set to LD.
- "receive" is being renamed to "receiver" to be consistent with
the naming in lib-jitsi-meet.
Leonard Kim