pfSense

Etc/GMT timezone text using ngettext()

(cherry picked from commit 88de4ab06c8a330a3cedf474b3e218a941f6db66)

Ticket #7089 Enhance Etc/GMT timezone descriptions

These work opposite to the way mere mortals expect.
Read: https://github.com/eggert/tz/blob/master/etcetera

Based on @phil-davis' patch from https://github.com/pfsense/pfsense/pull/3354

Redmine #7089 Add extra help about timezone

We could also add some text like this to encourage users to choose the "Continent/City" time zones.
(cherry picked from commit 0436b9a5197ac8c4646a006c0e351ecf66059193)

Correctly report unmonitored gateway status

If an alternate monitor IP has been entered and saved, then the user
checks "Disable Gateway Monitoring" and saves, the alternate monitor IP
is retained in the config - that is handy for when unchecking "Disable...

Fix a probably copy/paste error

As done on OpenVPN Server, delete tunnel when dev_mode changes so new device is created accordingly

Fix conditional to work as expected when $id == 0

Remove direct calls to /sbin/ifconfig destroy by pfSense_interface_destroy()

Fix ntp gps status
- trim sat in use
- gps ok for GPGLL
- lat & lon direction for GPGGA & GPGLL
- sat in use text position fixed

(cherry picked from commit fdb0479758339e083f7745d738c9999d86af150f)

Make appropriate success or danger boxes in system_crlmanager

When there is a problem, the messages should be in a "danger" box.
Note: It is a bit difficult to actual get the danger messages to appear in the UI, because the relevant "delete" buttons are not shown in the UI when delete is not valid. But it can be tested by starting to edit a CRL that is in use, then change the "edit=" to "del=" in the URL bar and send it....