Tag alias: computer_screen -> monitor

Posted under Tags

Also, there are some monitors for which we don't know whether they are small TV monitors or computer monitors, like post #1302336. We might as well not alias or even implicate these tags.

Edit: Perhaps to give both tags meaning, for computer screen, we can create a wiki entry that says "Use this tag for pictures with emphasis on the contents of the computer screen and pictures where it isn't clear that the screen is part of a monitor. Otherwise, tag with monitor instead."