Plugins Mailgraph, Monitorix, OpenDKIM, OwnDDNS, POPFetchmail, Postcreen, RoundcubePlugins, SpamAssassin: CS fixes

    [feedquote='i-MSCP Github (plugins) (nuxwin)','https://github.com/i-MSCP/plugins/commit/9ee607e16787266e3839eddb8494da0c43f40e8e']

    Code
    1. Plugins Mailgraph, Monitorix, OpenDKIM, OwnDDNS, POPFetchmail, Postcreen, RoundcubePlugins, SpamAssassin: CS fixes

    [/feedquote]