adds and updates missing tags for school's sports hall

fixes speed limit between "Schönefeld" and "Grünauer Kreuz"

fixes maxspeed around "Biesdorfer Kreuz"

updates maxspeed between "Grünauer Kreuz" und "Eichgestell"

railway is completely razed

improves tagging of new "Zugbildungsanlage Nordbahnhof"

adds new Zugbildungsanlage Nordbahnhof instead of abandoned tracks

adds new Zugbildungsanlage Nordbahnhof instead of abandoned tracks

fixes and improves curves for proposed Tram Gehrenseestr.

fixes and improves curves for proposed Tram Gehrenseestr.

adds proposed rebuild "Wendeschleife Gehrenseestraße"

removes lines for abandoned tracks that have been completely demolished and were also shown in the wrong historical position

adds abandones track at Nordbahnhof and missing electrification info in that area

adds missing tag for line under construction

fixed wrong tag for track usage

adds missing tag for line under construction

adds missing tag for line under construction

changes Parkeisenbahn Wuhlheide from miniature to narrow_gauge and fixes some tags

adds missing tags and fixes wrong tags for Darßbahn

closes gap of abandoned Darßbahn