While there, move some stray menu items to their respective module
menu and minimise the padding of the menu to reclaim the space added
by the fixed-width icon behaviour.

Looking good!  :)

Suggested by: @8191

CA Generation: fix internal intermediate CA creation

Internal intermediate CAs were not correctly refered back to the signing CA.

Menu: fixed menu for IPsec Mobile Clients after apply

The style checking is done in the build system, so there's no need
to keep this here.  A more dynamic way needs to be devised at some
point that allows plugging PHP modules into the code, but it's not
overly important.

Suggested by: @fabianfrz

Taken from: https://translate.opnsense.org/

Fix from @DokuKaefer

fix by @8191

OpenVPN wizard: remove incorrect legacy text

(legacy, ipsec) vpn_ipsec.php replace glyphicon glyphicon-remove with fa fa-trash text-muted (again, original in https://github.com/opnsense/core/commit/87014246c03c1697cd1836c973435bd85f8e9b80)

Added tooltip to show description of schedule and fixed editing capabilities of
schedules from page firewall_rules.php.

Tooltip shows description of alias.