QUASAR: Change 'mark' as hostile/benign to 'train' as hostile/benign
LIB: Remove a vague TODO about potentially refactoring featureset

Ticket #716
LIB: Remove a TODO that was already done

Ticket #715
LIB: Close a TODO that said to 'maybe' do something. We decided to not.

Ticket #711
LIB: Fix a TODO regarding a memory leak when deleting profiles

Ticket #709