Feature/#461 gl debuglog

Merging this means switching from gl v1.1.1 to gl v1.1.6

added 54 commits

• 1f5fb158...43663c80 - 53 commits from branch master
• aa15c251 - Merge branch 'master' into feature/#461_gl_debuglog

Compare with previous version

By Heiko Overath on 2018-07-05T08:31:29 (imported from GitLab)

enabled an automatic merge when the pipeline for aa15c251 succeeds

By Heiko Overath on 2018-07-05T08:34:38 (imported from GitLab)

merged

By Heiko Overath on 2018-07-05T10:13:28 (imported from GitLab)

mentioned in commit a205059d

By Heiko Overath on 2018-07-05T10:13:28 (imported from GitLab)