Tidy up "crash_reporter.php" XHTML

Tidy up Paragraph tags
Close INPUT tags
Tidy up "diag_dns.php" XHTML

Move the "=" sign into the first table cell, this allows the output to
line up in the second cell,
Tidy up the table from the "resolution time" output.
Tidy up "status_openvpn.php" XHTML

Move the closing FORM tag after the PHP check if there are any OpenVPN
instances.
Tidy up "status_queues.php" XHTML

Add closing BODY and closing HTML tags if "traffic shaping is not
configured."
Merge pull request #1223 from ExolonDX/branch_master_01
Merge pull request #1224 from ExolonDX/branch_master_02
Merge pull request #1225 from ExolonDX/branch_master_03
Merge pull request #1226 from ExolonDX/branch_master_04