MyBot.run v6.2.1 Release

Hotfix for v6.2:
Fix GUI display of clone/skeleton spells for TH level where they are not available
Fix old training bug (@promac submitted)
Fix Donate all custom troops not saving GUI properly
Fix search error where weak base was being applied to all attack types
Improve donate code to only attempt donation when dark spells available (was running if any spell was available)