featuremod - siv config

- updated siv.ini
Merge pull request #13 from twineapp/featuremod-siv-config

featuremod - siv config
featuremod - siv config

- removed user default groups from siv.ini
Merge pull request #15 from twineapp/featuremod-siv-config

featuremod - siv config
Merge branch 'release-3.21'