Allow enable/disable directive snippets for clients
I know that apache and php additional options are disabled for clients/resellers due to security as they can potentially break the whole webserver setup. However it is still needed to allow clients/resellers to enable some options in certain situations. My suggestions is to allow them to simply include some of the predefined snippets. I.e. the snippets that are added in the Directive snippets section are available as a list of checkboxes which resellers/clients can simply enable or disable.
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