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issue #6174

Removed phpstan.neon which will be in dev-tools instead.
Fixed some phpstan reported problems to avoid having a huge baseline.

issue #6114

issue #6119

issue #6072

Use a thrown error instead of calling msg_dialog and exit.
And use an exception handler to format uncaught fatal errors.

issue #6071

msgPool always returns escaped string because it may be used from
 smarty.
htmlescape now calls htmlspecialchars instead of htmlentities, allowing
 to escape strings with % without losing sprintf capability.

issue #6071

This cleanup solves some more escaping problems

issue #6071

php_setup happens before autoloading setup, so we need to include
 class_URL.inc by hand if we intend to use it there.

issue #6057

issue #6057

issue #6046

issue #6046

Moved userinfo related functions as methods in userinfo
Moved ppolicy account expiration check to expired_status method
Split ppolicy fetch in a method so that it can be used by expiration
 warning detection later.

issue #6001

issue #5955

Fixes of spaces by php-cs-fixer

issue #5955

Basic fixes like identation

issue #5955

issue #5956

issue #5831

issue #5831

There are some left in datepicker.js because of a bug in the sniffer,
 I did not find a way to fix that yet.

issue #5690

Signed-off-by: Mortier Benoit <benoit.mortier@opensides.be>

Signed-off-by: Mortier Benoit <benoit.mortier@opensides.be>