People might just copy-paste it, while there's usually no reason
to enable this by default for new installations; specially not as
a QucikStart.

Otherwise new installs that do not have this extension get a "white
page" with an exception in the logs, because the check happens before
the page reports on the required modules. This will no doubt lead to
many support questions on the mailing list.

I had to rename the class because 'static' is a protected keyword, but forgot to rename the file

\SimpleSAML\Error\NoPassive is deprecated and all modules now raise \SimpleSAML\Module\saml\Error\NoPassive.
During this period of deprecation, we need to catch both flavours.

This fixes NoPassive-errors when using consentAdmin

This used to be like this, but got changed in 67dc1b15, which seems like an accidental action?
This takes care of #894