update version and Readme

force

bugfix

fix tar path for supplementary files

fix proxy settings, update error handling

Merge branch 'ojs-stable-3_3_0' of https://github.com/ojsde/dnb into …

…ojs-stable-3_3_0

Merge remote-tracking branch 'origin/dev-3_4' into stable-3_4_0

fix version.xml