Fixed: Wrong placeholder variables in proftpd configuration template file (Ubuntu)

    [feedquote='i-MSCP Github (stable) (nuxwin)','https://github.com/i-MSCP/imscp/commit/ff1583d2fdeec0e95e825eacf16fbcf66206d4ff']

    Code
    1. Fixed: Wrong placeholder variables in proftpd configuration template file (Ubuntu)
    2. CS fixes

    [/feedquote]