Non-empty roles on route-relations should be ignored

[inof]

The Relation Analyzer seems to have problems with relations of type “route” that have associated objects like platforms and other things.
For example, look at relation 5504331: → link to Relation Analyzer, → link to the OSM relation
As far as I can see, this relation is correct. Beside the actual route (consisting of ways with empty role) it contains additional data, like several stops and platforms. These have appropriate roles like “stop”, “platform_entry_only” and “platform_exit_only”. The latter seem to cause problems with Relation Analyzer.
The solution is to consider only relation members that are actual part of the route, i.e. with empty role. All other members (with non-empty role) should be ignored by the Relation Analyzer.