Add support to dependencies

[Joxit]

I noticed that dependencies were often seen as countries, but it is not possible to use the boundary.country parameter to filter searches for documents that are located in dependencies.

Now the view boundary_country uses a multi_match query to match both country_a and dependency_a.

npm install is failing because the branch pelias/parser#remove-unit-type does not exists. So I sync my branch with origin/parser-remove-unit-type-updated

needs pelias/query#129

[missinglink]

FYI: the pelias/parser branching issue should be resolved shortly in #1565

[missinglink]

See approval comments in pelias/query#129

[Joxit]

Superseded by pelias/query#129