Realise new features and moves UI code.

[Kreolix]

• Simulate fight many times if units have random abilities. Estimate success rate.
• Add total rest HP without auto-troop HP. It allow compare team setup much easier.
• Blizzard changed enemy turn order again. Fix it in addon.
• Fix some target selection bugs.
• Combat log correctly clear after complete mission.
• Fix DoT/HoT first tick.

Internal changes:

• Check IsMissionOver only when unit died.
• Start to make log system as blizzard's system for comparing data in complete missions.
• Move frame creation code to separate file and make it more readable.
• Add hooks for complete mission.