pfSense

Add "delete entry" for ARP table

Useful function in some circumstances - seems no reason not to have it.

Uses IP rather than hostname since not all ARP entries have hostnames.

Probably should also have "delete all" but not done that.
(cherry picked from commit 6ea0d41e3c094a0977e7f0d022ec74276280b8ff)

Fix NTP PPS. It had 'None' option available on 2.2.x.

(cherry picked from commit ceabd66d57f7199602d3a23cb8a60080bcfa67ea)

Fix "Unable to remove NTP GPS from configuration"

https://forum.pfsense.org/index.php?topic=112771.msg627573
(cherry picked from commit 55de528cbb177b4a1f40554ad1a567198bbeebb3)

redundant check - is_numericint() tests for >= 0
(cherry picked from commit f208e9690e2ec4089cf3d3fe5f5f03fed5a36e6f)

fix logic and replace hard coded value by global

backups should be a numeric int.
text hint for number of backups can now refer to the global value for this platform (and explains how to get that default, by leaving blank)
(cherry picked from commit 16b17c15f9fc29e9480431b5bc7bebe2bd4b6230)

Give settings section a more helpful/standard title to match other GUI settings tabs
(cherry picked from commit ca55edc39342865816feef390616be8b770c889b)

Self correcting - poor english
(cherry picked from commit b56769c30a23af9f575ee4a5f056558ef8322f95)

Accuracy

Large keys are not "slower to use" in many cases, since they are only used to validate or set up a session. An ongoing session usually transfers to a symmetric algorithm once established, and the user won't notice the short extra delay in session startup....

missed a comment I added and shouldn't have - removed
(cherry picked from commit 7c684f3b95f641134496bc1210cfb2d814468767)

Update OpenVPN Wizard to include missing key sizes

...and add some useful info to guide the user.
(cherry picked from commit 49810252681df9bd553e2221c885ceffaa2c4c7f)