- Adds the update_idle_power_usage() and update_active_power_usage() procs for the respective vars.
- Switches all places modifying those vars directly to call the procs instead.
- This will let us react to the change appropriately, paving the way towards static area power.
- Adds update_power_channel proc for the sake of completeness, but no machines actually modify it so far.
R-UST Consoles can now be Deconstructed.
R-UST Consoles will not be inaccessible if broken or unpowered.
R-UST Consoles now accurately feed back if they're unpowered or broken.
R-UST Fusion field can no longer be stared at to hard by the AI.
