Printing, fixes #195

[Dubidubiduu]

Finally I was able to stick these files together, hopefully there isn't too much of a mess in the git process...

already closed my old pull request #451

[juliusknorr]

@Dubidubiduu Great, that looks really good. Can you also add the signoff message to the commit according to https://github.com/nextcloud/deck#sign-your-work.

Here is a quick guide how you can do that for this PR:
When you have checked out your branch locally, you can just run git rebase -i HEAD~2 to start an interactive rebase. An editor should then show up with the two commits. To edit the commits replace all pick occurences with edit, close and save the editor. Now you can run the following two commands twice (for each commit you are editing):
git commit --amend --signoff Amend to the current commit and add a signoff message
git rebase --continue`` To continue the rebase and go to the next commit After the last continue you should see some message like Successfully rebased and updated detached HEAD.` Then you should be able to force-push your changes.

[juliusknorr]

@Dubidubiduu I took the liberty to rebase your branch and put it into #609 so we can get this in for the next version. Thanks for getting this started. 👍