UnivNautes

Make sure variables are escaped, also replace exec calls to run rm by unlink_if_exists()

Remove useless code, variable is set again on next line

Escape parameters passed to shell_exec()

Be more careful with host parameter and make sure it's escaped when call shell functions

Validate starttime and stoptime format

Be more precise to match members of a bridge interface, it should fix #3637

Do not allow interface group name to be bigger than 15 chars, helps ticket #3208

Add some protection to parameters that come through _GET

remove openbgpd bits from system_gateways_edit and system.inc. The package
match is case-sensitive and hasn't matched the openbgpd package's name in
at least 5 years, so it doesn't do anything. It's far from functional in
any useful manner even fixing that issue.

Unset iflist and iflist_disabled