[cwctl] Recommend 'pyramid' before 'wsgi' when twisted is not available
Not sure anyone ever really used the latter and the former is certainly more
reliable/tested.
[cwctl] Drop message about 'the pyramid cube' in "start" command
This is shown when twisted is not importable and we suggest to use 'cubicweb
pyramid <appid>' instead. Since 3.24, cubicweb-pyramid got merge in cubicweb
so drop this reference in the message.