Retain characters when their last API key is deleted.

Signed-off-by: Tyler O'Meara <Tyler@TylerOMeara.com>
Fix a bug when deleting users.

Signed-off-by: Tyler O'Meara <Tyler@TylerOMeara.com>
Merge pull request #204 from Acidity/feature/retainCharacters

Retain characters when their last API key is deleted.