SkillchainCalc.2.10.1

Fixes

• Fav WS now works per-member — they contribute exclusively their chosen WS, while members without a fav WS remain unrestricted.
• Fixed name attribution for shared weapon types — Members are now only credited for WS they can actually perform when same weapon used by multiple party members
• Sole contributors are locked to their role — if a member is the only person who can fill one side of a skillchain, their name is removed from the other side.
• Fixed duplicate Light/Darkness rows — with two members on the same weapon type, Light/Darkness combos could appear twice. These now correctly merge into one entry.