Implement moderate gene inhibition

[tamslo]

Related to #642

• [ ] Get activity score ranges from CPIC data
• [ ] If no strong inhibitor taken, divide user's activity score by factor defined in inhibitors and show new phenotype as for strong inhibitors
• [ ] If a user takes multiple moderate inhibitors, count as a strong inhibitor
• [ ] If the activity score is a range (might be the case for ultrarapid) divide both extrema, could result in multiple phenotypes