Merge remote-tracking branch 'origin/bugfix/7774_remove_constraints'
Merge remote-tracking branch 'origin/bugfix/7820_peaks_columns_sorting'
Include the os module for some workflow algorithms

The os was available before in the old api when import all, it has passed without
notice.

Now, it has been bassed to those scripts using the os module.

re #7760
Merge branch 'feature/7760_workflow_import_os' into develop