Merge pull request querqy#60 from querqy/fix/versionInfo_backend

Fix version parsing in backend for version patterns missing minor or build versions

Merge pull request querqy#58 from querqy/refactoring_2020

Refactoring 2020

v3.11.11: enhance SMUI validation (see /smui/issues/51)

v3.11.10: re-trigger travis

v3.11.9: multi instance ability (of event history migration)

v3.11.8: fixed dependencyCheck plugin version

v3.11.7: added tests for regular/git deployment