add reset function to db backend#62

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Qualenritter wants to merge 2 commits intoparcio:masterfrom

Qualenritter:add-reset

Commits on Sep 16, 2019

add reset function to db backend
Qualenritter
committed

Commits on Sep 17, 2019

merge with master - requested changes are (only) commented on github
Qualenritter
committed