ICE20 Basel-Hamburg: fix PTv2 relation, clean up along the way, add some parts

Rheintalbahn: tagfixes Nebengleise usw.

RE5 Falkenberg (Elster) => Stralsund: convert to something close a PTv2 relation, clean up along the way

Untere Edertalbahn: add route=tracks, some tagging cleanups

TGV Est: improve railway tagging

EC München <=> Verona: convert to PTv2 relation, fix railway tagging errors along the way

Berlin Lehrter Bahnhof: clean up some tagging warnings

Stuttgart 21: fix tagging of planned/constructed elements, fix nearby tagging errors

S9 Bruchsal <=> Mühlacker: nearly convert to PTv2 relation, fix railway errors along the track

RE 60 Frankfurt-Mannheim: convert to PTv2 relation, fix railway errors along the track

RB 66 Darmstadt-Pfungstadt: fix PTv2 relation, fix railway errors along the track

IC1953: add missing platforms, fix PTv2 relation, fix railway errors along the track

RE Basel-Offenburg: add missing platforms, nearly convert to PTv2 relation, fix railway errors along the track

ICE 11: add missing platforms, fix PTv2 relation, fix railway errors along the track

Hannover HBf: drop bogus ref

fix typo in tagging

TGV 101: fix PTv2 relation member order, and railway tagging fixes along the way

GÖ-Gartetalbahnhof: details

ICE 28: make it nearly a PTv2 relation, clean up errors along the way

ICE11: convert to proper PTv2 relation, fix tons of other tagging issues along the way