Add route_master for Buss 17: Umeå <=> Robertsfors

Start converting bogus Swedish railway_station to proper stop_area relations

Fix wrong oneway ways in Flixbus K604: Stockholm Cityterminalen => Umeå Busstation

Fix order of ways in Flixbus K604: Stockholm Cityterminalen => Umeå Busstation

Fix alternate route to Gnejsvägen of Buss 5 in Umeå

Use stop position instead of station node in Luleå of Tåg 33: Luleå => Umeå

Fix routing entering and leaving Vännäs of Tåg 34: Umeå <=> Vännäs <=> Lycksele; might be the wrong track/spår though

Fix some problems on routes running on Malmbanan

Fix order of stops in Flixbus K604: Stockholm Cityterminalen => Umeå Busstation

Add Buss 171: Sävar <=> Norrfjärden

Add Buss 120: Umeå <=> Sävar

Fix Buss 123 route

Refine a few bus stops around Tavelsjön

Add variants via Långviksvallen to Buss 16 in Umeå

Add all stations to Buss 16: Vindeln <=> Tavelsjö <=> Umeå and refine some parts along the way

Add Buss 124: Holmsund <=> Umeå

Further unify bus stops in Umeå

Clean up stops of Buss 8 (and parts of Buss 5) in Umeå

Extend Buss 8 in Umeå to Lyktvägen

Bus stop Magistervägen has been removed 2 years ago...