use dynamic bbbikeleaflet URL (.cgi instead .html)
api=config: provide module information

Currently version information for some modules will be returned, if
Module::Metadata is installed.

bbbikecgiapi-config.t test is adapted, as some modules are optional
and may be legally missing.
additional tests on live

The bbbikecgiapi* tests now also run during a deployment.
new dependency Module::Metadata
data update (minor)