This commit adds the Nightshift lighting mode from /tg/. From 19:00 to
07:00 in station time, the station will go into a reduced-lighting mode,
with dimmed lights across the station.
In conjunction with this, there is a new configuration option to start
the shift time at a random time other than 12:00, so that players are
more likely to experience a night shift (as opposed to having to have a
7 hour round).
This commit changes how NanoUI's live data updating system works.
Previously, data for the template was directly gathered in the
ui_interact proc. Now, it is seperated into the proc `ui_data`.
To players, this does absolutely nothing.
To coders, this opens up the potential for a much more complicated and
fancy graphical updating system in the future, because the data is
available on-demand without ever having to call
nanomanager.try_update_ui.
Currently, to_chat is literally just a proc that does user << message.
But it'll let us do output modification in the future, especially for
something like Goon's HTML chat.
Big thanks to PJB for his to_chat script, see
https://github.com/d3athrow/vgstation13/pull/6625 for more details.
