Merge remote-tracking branch 'origin/feature/9129_process_groups_better_error_msg'
Merge remote-tracking branch 'origin/bugfix/9165_fix_dgsdiagnose_parameter'
Merge remote-tracking branch 'origin/feature/9104_load_option_output_ws'
Use managed algorithms again at the top level in Python.

This restores the progress reporting to the GUI as anything going through
the AlgorithmManager::create method is automatically tracked.
Refs #9203
Merge branch 'bugfix/9203_script_alg_progress' into develop