fix against https://github.com/globaleaks/GlobaLeaks/issues/572
Bump to version 2.24.13.1
addressed https://github.com/globaleaks/GlobaLeaks/issues/571
addressed one of the sub-issues in https://github.com/globaleaks/GlobaLeaks/issues/572
Merge branch 'master' of github.com:globaleaks/GLBackend