Germany - boost the most used codes

[klokan]

We should boost Germany codes better in the full text search results:

Thanks @maegger for the list published at: http://www.egger-gis.at/checkcountryprojection/

Official list at: https://www.bkg.bund.de

[maegger]

Please look at this list for important German projections too: http://www.geodatenzentrum.de/geodaten/gdz_rahmen.gdz_div?gdz_spr=deu&gdz_akt_zeile=6&gdz_anz_zeile=3&gdz_unt_zeile=0&gdz_user_id=0

It is not a image ;-)