Building a dispatcher before setting up the resolver is not compatible with Sparql Flow

[PonteIneptique]

In the current sparql-collections-branch, the Resolver sets up the connection to the graph through a RDFLib Store.

Unfortunately, in the context of a dispatcher and inventory collection, the flow will find the graph to be empty. This means we need to set up the graph manually outside of the resolver in the context of a dispatcher, ie call set_graph ourselves before Resolver is initiated

[PonteIneptique]

NB : to work and try the sparql-collections branch, you need to use the following line for installing MyCapytain : pip install https://github.com/Capitains/MyCapytain/archive/issue-154.zip