Can't find stop places with no valid version from UI

[mhicauber]

Due to versionValidity being set to CURRENT by default and no way to change this from UI, when searching for stop places with no valid current version no result is returned, even if pointInTime is null (pointInTime == null && version==ALL was the way to search for stop places until now)

[mhicauber]

see commit 19aafd8

[csolem]

It should still be possible to use the allVersions parameter to get all versions.
The difference is that if none of allVersions, version, pointInTime or versionValidity is given, the query will use default versionValidity:current.

[csolem]

Abzu and Tiamat (graphql) were both changed to use the versionValidity argument to fetch max version of stop places.