cubicweb #469395 Add message for regular error case in database creation [resolved]

Better error report when cubicweb manager is used as anonymous user. This case is often difficult to remind.

The current behaviour is certainly right but we could add a hint message before the db-create failure.

prioritynormal
typebug
done in3.5.6
load0.000
load left0.000
closed by<not specified>