[FLOW3-general] Many to Many Relation with Duplicates

["Christian Müller (Kitsunet)"]

Hey Jeff,

as for the ManyToMany the described behaviour is correct, but doctrine 
shouldn't set a unique contraint on the columns so that multiple entries 
with the same keys should be possible and so quantities should be 
working. If not it's a bug for me (either in our implementation or in 
doctrine, that would have to be checked).

For the Initialisation of subproperty creation, that is correct, you 
need that always.

Cheers,
Christian