(cherry picked from commit 2d08f304)

Submitted by: @fbrendel

(cherry picked from commit 3cf976cd)

(cherry picked from commit fb99cf44)

(cherry picked from commit 7116568b)

(cherry picked from commit 2dde9b7c)

(cherry picked from commit 593f9b77)

This is the proper way to handle bootup output for the
console: request it and don't output ever time it's called
during boot....

(cherry picked from commit 2c045731)

(cherry picked from commit 65c53e3c)

(cherry picked from commit 74ca8331)

(cherry picked from commit 015c5d00)
(cherry picked from commit a9f41407)

(cherry picked from commit a000c8e0)

(cherry picked from commit 5d60cd1f)

(cherry picked from commit 4590b17d)

(cherry picked from commit e84c86cc)

(cherry picked from commit 8de4047e)

(cherry picked from commit 991678d1)

(hassync) trigger xmlrpc sync before service action, for https://github.com/opnsense/core/issues/1217

(cherry picked from commit 7c82fe62)

PR: https://github.com/opnsense/core/issues/993

(cherry picked from commit 9a0c3839)
(cherry picked from commit edc40978)
(cherry picked from commit 4283c02a)
(cherry picked from commit 850cd7a5)
(cherry picked from commit 8d11de1b)

(ui) add modal form in legacy template to signal the user about pending service action (stop,start,restart)

(cherry picked from commit e14a6b7e)

(crashreport) limit output chunks to 5MB, if we can't find </head> within that area it's very unlikely that it exists in the output.

report:
PHP Fatal error:  Allowed memory size of 268435456 bytes exhausted (tried to allocate 35997807 bytes) in /usr/local/www/csrf/csrf-magic.php on line 144

(cherry picked from commit 2f741d7a)

(cherry picked from commit 2a322bff)

(cherry picked from commit c78c9ced)

(cherry picked from commit d908e000)

(cherry picked from commit 4b95bed1)

Example before: {"errorMessage":"Undefined offset: 0 [8]"}
Example after: {"errorMessage":"Error at \/usr\/local\/etc\/inc\/util.inc:952 - Undefined offset: 0 (errno=8)"}

if the tty is closed while the script is running,
it would previously go in an infinite loop trying
to read from and write to the now-defunct tty.

PR: https://github.com/opnsense/core/issues/1240

(cherry picked from commit a11850cc)
(cherry picked from commit 8986792d)

o Don't look for templates in manufacturer directory
o Allow to use "/" component separator, it's safe
o Hook up the "template list" command

(cherry picked from commit a4b9c029)
(cherry picked from commit 477fba11)

(cherry picked from commit a89858db)