Fixing codestyle

This fixes a warning from PHPCompatiblity about a possible future
 conflict with PHP internal functions.

issue #6167

issue #6024

And convert global_get calls to get

issue #6024

Also global_is_set to is_set.

issue #6024

Moved it to a class which get instanciated in userinfo and keeps the
 size limit status for the current session.

issue #5135

issue #5942

Made sure to empty alt attribute when an img is decoration and does not
 provide information.
In some files also fixed some alt content when it made sense

issue #5917

Resolve "From and Reply-To headers may have different value in mail_utf8"

See merge request fusiondirectory/fd!464

(cherry picked from commit 2f711d7f)

4b1b8cbb  feat(functions) mail_utf8 now allows to set Reply-To header

issue #5890

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

Resolve "Security: Insecure Generation of Random Tokens"

See merge request fusiondirectory/fd!325

(cherry picked from commit 2faf258b)

9af5ac62  fix(core) Give using unpack for bytes conversion

Now bin2hex and hexdec are used instead, so hexadecimal is used as an
 intermediate for the conversion.
Also, fix a bug that max was never returned.
Also fixed filter which was turning result negative in some cases.

issue #5843

Resolve "Security: Insecure Generation of Random Tokens"

See merge request fusiondirectory/fd!322

(cherry picked from commit 697eff83)

4abf4588  fix(core) Avoid crash on 32-bits systems for random_int fallback

We cannot use Q on 32-bits systems so we use L instead for a 32bits integer

issue #5843

Resolve "Security: Insecure Generation of Random Tokens"

See merge request fusiondirectory/fd!319

(cherry picked from commit 6d0aba68)

a8f4d2eb  fix(core) Fix 2 problems in random_int fallback

Throw Exception when max is less than min
Unpack with Q instead of C to support ranges wider than 255

issue #5843

Resolve "Security: Insecure Generation of Random Tokens"

See merge request fusiondirectory/fd!301

(cherry picked from commit 3bb68492)

b62266fa  fix(core) Use only random_int for pseudo-random int generation

For PHP<7.0, we fall back on openssl_random_pseudo_bytes from openssl module.

issue #5843

This also fix the workflow to make sure the language in the header is
 correct in all cases.
A PHP error is triggered if setlocale fails or if the wrong language
 header was sent.

issue #5820

Resolve "Locking fails with multiple SSH Keys"

See merge request fusiondirectory/fd!161

(cherry picked from commit f65c70a1)

edb76c92  fix(ssh) Fix SSH locking with multiple keys

issue #5790

issue #5775

Also fixed local name for both portuguese languages.

issue #5762

issue #5761

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