Fix issue with deleting characters when deleting a key.

Signed-off-by: Tyler O'Meara <Tyler@TylerOMeara.com>
Remove credential_for_excluding from character.model

Signed-off-by: Tyler O'Meara <Tyler@TylerOMeara.com>
Merge pull request #199 from Acidity/feature/fixKeyDelete

Fix issue with deleting characters when deleting a key.