Merge branch '27-describe-intra-and-inter-species-target-variants-as-part-of-same-family' into 'master'

Resolve "Describe intra and inter-species target variants as part of same family"

Closes #27

See merge request !9

Resolve "Select legal page"

Closes #22

See merge request !7

- flatten documents hierachy
- add types to be able to select some subsets

Resolve "Add targets without modification in tableEntry"

Closes #23

See merge request !6

New api nomenclature

Closes #13

See merge request !5

Also force class to be set in sequence

Draft: Resolve "Legal Mentions"

See merge request !2

Note: the neo4j DB must contains a node with Documents label

Draft: Resolve "Update to neo4j-graphql-5"

See merge request !3

- version
- url
- source

- result -> symbol
- add symbol_label, type_label, type_short_label

Remove the custom resolver and add featureType in database