Generalized "version_dir" handling a little for download specs
The problem was that bootstrap5 uses a version directory, which consists of the version plus an extra string element. The previous version assumed that the version is always used as a directory name.
Whe track now the versionDir information in the resource_info dict and use this, when available (otherwise the version number is used as before).
The resource_info dict contains now the following path components:
# Provide paths for loading either via /resources/ or CDN # # "resourceDir" is the absolute path in the filesystem # "resourceUrl" is the URL path provided to the request processor # "versionDir" is the version-specific element both in the # URL and in the filesystem. #