1px lines in results bar

[mattpass]

At present the lines in the results bar will only show if the lines are 0.5 pixels or higher. Instead have 1px lines and consider if there's any results that justify a 1px line being drawn, plus if we have a line, no need to add another.

Also check that the results bar updates on paste and other ways of updating such as drag.

[mattpass]

All done here and working really well now.