Release 10.0.0-alpha.7 -- miscellaneous fixes

Use preferred ENV=value syntax in Dockerfile
Correct the Metadata utils path in sildisco/metadata.php
Added a null coalesce on $state['mfaLearnMoreUrl'] for the review page
- fixes error: SimpleSAML\Error\Exception: Warning - Undefined array key "mfaLearnMoreUrl" at /data/vendor/simplesamlphp/simplesamlphp/modules/profilereview/public/nag.php:37
Defined exampleauth:UserPass users in users key
- fixes error: Module exampleauth:UserPass configured in legacy mode. Please put your username:password entries under the "users" key in your authsource.
Changed from if to assert to catch error condition earlier
Stop using the admin module to access the hub discovery page
- fixes error: Caused by: Twig\Error\RuntimeError: An exception has been thrown during the rendering of a template ("SimpleSAML\XHTML\Template::getEntityDisplayName(): Argument #⁠1 ($data) must be of type array, null given, called in /data/vendor/twig/twig/src/Environment.php(392) : eval()'d code on line 82").
Filled in missing data in authsources.php
- fixes error: SimpleSAML\Error\Exception: Warning - Undefined array key "add" at /data/vendor/simplesamlphp/simplesamlphp/modules/profilereview/src/Auth/Process/ProfileReview.php:234

Removed browser check for webauthn support
Removed abandoned package sinergi/browser-detector
In Dockerfile:
- Removed ENV REFRESHED_AT
- Removed RUN mkdir -p /data
- Removed s3-expand
- Removed RUN chmod a+x /data/run.sh /data/run-tests.sh
Removed index.php override, originally added to call autoload.php, no longer needed
Removed id.php override, originally added for load balancer, no longer needed
Removed announcement.php placeholder
Removed material logout template. We have no need of this since logout redirects back to the SP.
Removed support for the enabled metadata IdP attribute

Updated php-env and use null as the default for getArray for TRUSTED_URL_DOMAINS

silinternational / ssp-base