Spacewar: use the space between the information panel to list currently selected units

[GoogleCodeExporter]

The middle space looks ugly. Maybe we could use it to list the currently 
selected units similarly to the equipment screen.

Maybe add some group-aggregate statistics such as their total firepower, total 
damage, etc.

Maybe have small buttons named 0 .. 9 to indicate the group is available and 
left click selects it

Original issue reported on code.google.com by akarn...@gmail.com on 7 Sep 2011 at 5:37

[GoogleCodeExporter]

Showing
-health
-shield
-unit type
-owner
-parent fleet or planet
-firepower / damage per second
-rocket/bomb counts

Use mouse wheel to scroll the list

Original comment by akarn...@gmail.com on 11 Jan 2012 at 5:21

• Changed state: Started

[GoogleCodeExporter]

Original comment by akarn...@gmail.com on 11 Jan 2012 at 7:54

• Changed state: Fixed