pfSense

Fix some wrong escapeshellarg() calls

Add escapeshellarg() calls on exec parameters. While I'm here, replace some exec() calls by php functions like symlink, copy, unlink, mkdir

tighten overly broad regexes for SMART monitoring

Also catch adaX Fixes #3112

Fix page name. Fixes #2813

Validate passed parameters to smart commands, and the target device. Also escape when used in shell commands even after validation.
Discovered-By: Bernhard Thaler

Self-test should be hypenated, and the T should be lower case.

Use a better regex here, sometimes ad devices can be numbered >=10.

Fix XSS issues

Fix a duplicate line forgotten on a merge

Merge remote branch 'mainline/master'

Conflicts:
usr/local/www/diag_smart.php
usr/local/www/firewall_rules_edit.php
usr/local/www/interfaces.php
usr/local/www/load_balancer_pool_edit.php
usr/local/www/pkg_mgr_settings.php

Fix text

Implement geettext() on diag_smart.php

Add Diagnostics > SMART Status for ATA HDDs. (Some functionality disabled, still needs hooked into notifications, and service code for smartd)