Update related archetypes/opt for growth chart

[bpjohannessen]

[x] opt/GrowthChart/Growth_Chart_Persistent_Parents.opt
[x] templates/GrowthChart/Growth_Chart_Persistent_Parents.oet

[x] templates/GrowthChart/Growth_Chart_Reg.oet
[x] opt/GrowthChart/Growth_Chart_Reg.opt

[x] archetypes/entry/observation/openEHR-EHR-OBSERVATION.growth_chart_parents_dips.v1.adl
[x] archetypes/entry/observation/openEHR-EHR-OBSERVATION.subscapular_skinfold_dips.v0.adl
[x] archetypes/entry/observation/openEHR-EHR-OBSERVATION.triceps_skinfold_dips.v0.adl

[bjornna]

Skal denne følges opp nærmere? Hva skal i så fall gjøres?

[bpjohannessen]

@bjornna Den closes av PR #103