Every validated Data Set (and repsective Data Stream placeholders) once validated become accessible to anonymous user. This implements default data lake policy: all can download data sets but only authenticated can upload

Since 94a179a607d96b5732177fb9e61839577e567cd2 this editor no longer exists, thus replace accordingly.

/reviewed-on !35

Added Business template to be used in tutorial and updated wendelin-standalone-bind.sh

/reviewed-on nexedi/wendelin!33