pfSense/pfsense f8ce2bdsrc/usr/local/www system_certmanager.php

Rework cert keylen/digest validation. Fixes #9180

(cherry picked from commit ed76624bf01c0d1718d427919145bf4e5f949264)
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+24-15src/usr/local/www/system_certmanager.php
+24-151 files

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