Merge `maint-0.7` to `master`

[mvidalgarcia]

• [x] reana-ui
• [x] pytest-reana
• [x] reana-commons
• [x] reana-db
• [x] reana-client
• [x] reana-job-controller
• [x] reana-message-broker
• [x] reana-server
• [x] reana-workflow-controller
• [x] r-w-e-cwl
• [x] r-w-e-serial
• [x] r-w-e-yadage
• [x] reana

[tiborsimko]

Works well with:

$ reana-dev git-status -c ALL | grep -v '@ master' | sort
pytest-reana @ pr-78 @ b4bc5eb Merge branch 'maint-0.7'
reana-client @ pr-450 @ e6cd519 Merge branch 'maint-0.7'
reana-commons @ pr-242 @ c8ec8f6 Merge branch 'maint-0.7'
reana-db @ pr-117 @ 19a1ac9 Merge branch 'maint-0.7'
reana-job-controller @ pr-289 @ ed9e82f Merge branch 'maint-0.7'
reana-message-broker @ pr-33 @ b06b53b Merge branch 'maint-0.7'
reana @ pr-465 @ c20c85c Merge branch 'maint-0.7'
reana-server @ pr-324 @ d83c88a Merge branch 'maint-0.7'
reana-ui @ pr-161 @ bfa760d Merge branch 'maint-0.7'
reana-workflow-controller @ pr-355 @ 0d9c34e Merge branch 'maint-0.7'
reana-workflow-engine-cwl @ pr-162 @ 9154af4 Merge branch 'maint-0.7'
reana-workflow-engine-serial @ pr-128 @ e62774a Merge branch 'maint-0.7'
reana-workflow-engine-yadage @ pr-174 @ ae075c9 Merge branch 'maint-0.7'

[tiborsimko]

All PRs are now merged.