quota(tool) always installed

We have --no-quota which prevents usrjquota=quota.user,grpjquota=quota.group,jqfmt=vfsv0 from being added to /etc/fstab, but the packages quota and quotatool are being installed nevertheless. In regards to #16 (closed) where --no-jailkit is requested, we should only install the two packages if required. A merge request is provided.

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