This update for gnuhealth, trytond fixes the following issues:

Changes in gnuhealth:
- version 3.2.3 Fix bug #52038: Field history is repeated in the tree
view of the prescription line
- Documentation adapted

Changes in trytond:

- package documentation updated

Changes in trytond_company:

- bugfix update to 4.2.1

Changes in trytond_currency:

- bugfix update to 4.2.1

changes in trytond_purchase:

- bugfix update to 4.2.2