Add a task pop-up window like IntelliJ IDEA

I would prefer a pop-up window to indicate what task are going on, and terminate them quickly: 

Currently, the SmartGit only supports a large "Output" panel, which displays all the git actions. I would prefer making it a pop-up window like IDEA, keep the "output" window as a "command history" would sound more logical. The key is to view the ongoing tasks quickly, by using a little pop-up, we don't have to open a large panel "output".

Also, support the abort action of Pull and Push please.