Fix pseudonyms

[TimHenkelmann]

As LukasS96 mentioned, our data currently does not contain any pseudonyms. Check, what's the reason

[sacdallago]

@lukass96

[felixschorer]

I think what @lukass96 meant by that is that for names like Wolfgang Amadeus Mozart there are no abbreviations and such in the database. The database should probably also contain something like W. A. Mozart, Wolgang A. Mozart, etc.

[kordianbruck]

So, any other ideas on this @TimHenkelmann