(cherry picked from commit 1373b01a)

For now plugins.inc and ipsec.inc will coexist on pages that
may need only one or none to avoid unefined function errors.
This will be pruned after investigating the contents of both
files...

(cherry picked from commit d7df9ecf)

(cherry picked from commit f79fac8f)

(cherry picked from commit 813d76ca)

(cherry picked from commit 7c4bc839)

(cherry picked from commit 7f3e9791)

(cherry picked from commit ff7fce12)

GUI sorting for now should be new, update, reinstall, remove.  Later
all those types ought to be merged into a single list with backwards-
compatible behaviour.  First of many neat firmware improvements on
our way to 16.7.  :)

(cherry picked from commit 8770689a)

This doesn't work out at all for the fact that the control picks
up the first instance it finds, either client or server, but not
clearly stating so.  That's why there is a status page with all
the services for clients and servers...

(cherry picked from commit 7b17ac34)

(cherry picked from commit 918df6ea)

(cherry picked from commit d03b53b3)

fix for https://github.com/opnsense/core/issues/296
and  https://github.com/opnsense/core/issues/347

when no servers are selected, all still apply, which should keep current configurations valid.

(cherry picked from commit d101b28e)

(legacy) align help message with openvpn for vpn_openvpn_server.php, closes https://github.com/opnsense/core/issues/774

(cherry picked from commit 8389079e)

(cherry picked from commit 3f2c5304)

(cherry picked from commit d9c91c3f)

(cherry picked from commit 33d8497b)

(cherry picked from commit 63938f7b)

(cherry picked from commit 30f6c2bc)

(legacy) add copy/move to vpn_openvpn_csc.php overview + some js cleanups. closes https://github.com/opnsense/core/issues/442

(cherry picked from commit a0587c03)

(cherry picked from commit 0f2f9ce7)

(cherry picked from commit 9784c8b0)

services.inc already includes unbound.inc and miniupnpd.inc so
it's safe to do this...

(cherry picked from commit f90e96f2)

(cherry picked from commit 79edae2c)

(cherry picked from commit d9810025)

(cherry picked from commit 3600c6a3)

(cherry picked from commit de888244)

(cherry picked from commit 60f0f461)

(cherry picked from commit 6f2daad5)

(cherry picked from commit 4d3ac63a)

(cherry picked from commit 77696bd8)

Improve redirect to avoid removing the savemsg which can be useful
and start to use the service array instead of the plain name.  This
is going to help with moving all the start/restart/stop info into
the service array creation for base services as well as plugin
services.

(cherry picked from commit aa8202aa)

(proxy) set unset description on X-Forwarded-For. closes https://github.com/opnsense/core/issues/790

(cherry picked from commit 8b701717)

(cherry picked from commit df7e8660)

(cherry picked from commit 23b34746)

(cherry picked from commit 731d5ab6)

(cherry picked from commit 75bbd009)

(cherry picked from commit ca10a6f2)

(cherry picked from commit 28cf9dba)

(cherry picked from commit 71bd852f)

(cherry picked from commit 89179ee7)