undonate feature

[ElDucky]

Sometimes I misclick what I wanted to donate. Would like to take it back, or confirm the total donation. Sometimes I try to donate and it turns out the 0/30 is really 18/30 and was displaying wrong, and I end up giving the wrong troop.

 

[Nyah~]

And ability to kill off (free space)ancient gladiators sent by some people in both the regular and war