One narrow odour but more LNs

Similar to v1.0 but with a larger number of local neurons. Other parameters have been adjusted so that the same behaviour was achieved. This wasn't completely trivial as with the many LNs the connection scheme led to WTA behaviours of individual neurons/ glomeruli and no suppression at higher concentrations. What solved the problem was to make connections with a fixed pre-synaptic number, so that neurons are excited more equally.