Fix/ci failure 58

Update dependencies in Pipfile.lock and fix mypy failures: Somewhere between version 0.670 and 0.720 the mypy static code checker started throwing errors on bottle imports (although it is told to ignore all vendor.* modules in the tox.ini). This was fixed by adding '# type: ignore' (i.e. ignoring them) to the relevant lines, since I have no energy to investigate what happend :-(