Include negation in tobacco and alcohol pipelines

[marieverdoux]

With the current code, detailed status "ABSENT" is assigned only when negation is found after the entity, not before.

Example:
If text is "Patient non fumeur", detailed_status is assigned to PRESENT.
If text is "Fumeur: non" , detailed_status is assigned to ABSENT.

Feature suggestion:
The negation patterns from negation pipelines should be included to the tobacco/alcohol pipelines so detailed_status is set to ABSENT in any negation case.