Unit Information Window needs to display AVO, HIT, CRIT, (and AS once implemented)

[ghost]

Issue type: feature request

Description:

As per this thread, /u/FerrorusLupus AKA "h4" and I are in agreement that the Unit Information Window, found at bottom center of the screen, should (in addition to the already displayed stats) also display a unit's Avoid, total Hit Rate, total Crit Rate, and Attack Speed (once implemented - will probably require #119 to be complete first so that we can have a choice of what AS system to use) so that players can make more informed tactical decisions without the need to blindly approach and rely solely on the Combat Forecast.