(cherry picked from commit 575c6440)
(cherry picked from commit 6009ab93)
(cherry picked from commit 834ccbe0)
(cherry picked from commit 5376a0ec)

PR: https://forum.opnsense.org/index.php?topic=5099.0

(cherry picked from commit 1417414b)
(cherry picked from commit ef1dc387)
(cherry picked from commit ecace09a)

(cherry picked from commit f5c25d72)
(cherry picked from commit 2abbf0dc)

(cherry picked from commit 6d443755)
(cherry picked from commit 2d42d843)

If configd doesn't respond the JSON is not available, which we really
need a wrapper for doing this fallback all the time and maybe even
with error reporting inside that returned array.

(cherry picked from commit d79c1acf)

(cherry picked from commit 7a78cc99)

OpenVPN servers using udp6 or tcp6 fail to start, closes https://github.com/opnsense/core/issues/1576

(cherry picked from commit daa58810)
(cherry picked from commit 3abd54ae)

(cherry picked from commit 852657c7)

(cherry picked from commit 025021b8)

dhcp server / static leases, issue with loading settings into form. closes https://github.com/opnsense/core/issues/1568

(cherry picked from commit 8e0583e9)

(cherry picked from commit ae677059)

(cherry picked from commit 1626ab87)

(cherry picked from commit 8ca337c9)

(cherry picked from commit 829e0aa2)
(cherry picked from commit 8c6c1f5e)

New iOS versions doe autocapitalisation, autocrrection and/or autocomplete. All three can be annoying when entering always changing usernames with sometimes lower-case first characters, as in the Captive Portal Vouchers usernames.

This should fix the behaviour and make the portal more graceful towards iOS devices.
(cherry picked from commit 6404281c)

(cherry picked from commit 07c26842)

... the save button can still be useful.

(cherry picked from commit 99a3caf3)

(cherry picked from commit be9a2787)

(cherry picked from commit ad3fa98b)

(cherry picked from commit d7834708)
(cherry picked from commit fbac6fb1)
(cherry picked from commit 8c31aa3c)
(cherry picked from commit bbb0d208)
(cherry picked from commit 88ddc985)
(cherry picked from commit fb93a51c)
(cherry picked from commit 8f4acc30)

(cherry picked from commit 25f89aad)
(cherry picked from commit 2c8c4666)
(cherry picked from commit 3dca5386)

(cherry picked from commit a56ade1e)

(cherry picked from commit 5e53c764)
(cherry picked from commit ca09d5a0)

(cherry picked from commit 6573e70a)
(cherry picked from commit 57e6e8d8)

(cherry picked from commit 8d3797a2)

(cherry picked from commit 48d4f752)

(cherry picked from commit 1dd50732)

(cherry picked from commit 2c97a083)

In the end, it's better to check if the key exists, although it
always should, that's what the key is for....

(cherry picked from commit a60db3ce)

Looks like this name isn't displayed or otherwise used, but
for the sake of consistency fix the typo.

(cherry picked from commit 27791f7a)

get_std_save_message() should be removed eventually, there are only a
few callers left.  Out of lack of imagintion, just fix the apparent
issue and remove the attached filter/firewall message that doesn't
really work because it does not look for "firewall" in the script name.

(cherry picked from commit 32f2ddbc)

(cherry picked from commit 00285185)

* fix translations in traffic shaper

* translation IDS and Proxy

(cherry picked from commit 2c8c4666)

* translate dialog titles; closes #1546
* Some additional strings reported by @DokuKaefer

(cherry picked from commit 25f89aad)