(cherry picked from commit 25c074ce)

(cherry picked from commit 84d262f1)

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(cherry picked from commit bcd4b5b1)

(legacy) refactor services_unbound_acls.php, add automatically generated acl's. closes https://github.com/opnsense/core/issues/563

(cherry picked from commit 5400549c)

(cherry picked from commit ab85b60e)

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(cherry picked from commit 6ee63964)

Discussed with: @adschellevis

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(cherry picked from commit 04e95895)

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    <tag>
      <!-- foo -->
    </tag>

Array tags are saved as text tags instead, clobbering the initial
configuration...

(cherry picked from commit 30cce013)

(cherry picked from commit b78606b8)

(cherry picked from commit 9297c0e0)