Sprint-16 Front End Demo Merge

See merge request !294

# Conflicts:
#	SAS/TMSS/frontend/tmss_webapp/src/routes/Scheduling/Stations.js

Resolved Conflicts

Resolve TMSS-250

Closes TMSS-250

See merge request !291

# Conflicts:
#	SAS/TMSS/frontend/tmss_webapp/package.json
#	SAS/TMSS/frontend/tmss_webapp/src/layout/_overrides.scss
#	SAS/TMSS/frontend/tmss_webapp/src/routes/index.js

Resolved Conflicts

QA Reporting (SDCO) title updated
PI Report not displayed - fixed

update the code for review comments

update the code for review comments

TMSS-419: Fixed Serializer for Scheduling Unit Process

Closes TMSS-419

See merge request !292

TMSS-419: New scheduling_unit_flow/qa_scheduling_unit_task API

Closes TMSS-419

See merge request !290

Resolve TMSS-486

Closes TMSS-486

See merge request !289

Changes updated based on review comments

Updated the code to handle the observ strategy

TMSS-427: Station list in SU summary view modified to load from task or subtask based on the SU status and listing only unique stations.

scheduling_unit_flow/qa_scheduling_unit_task allows to navigate the workflow steps and to get the current status

# Conflicts:
#	SAS/TMSS/frontend/tmss_webapp/src/routes/Scheduling/ViewSchedulingUnit.js

Resolved conflicts.

Fixed Issues:
Due to constraint schema external reference.
Subtask Control ID not displayed in SU Draft view for BP Tasks.

Stations updated on TimeLine View

Added Station Group with Save button Validation

Resolve TMSS-473

Closes TMSS-473

See merge request !288

TMSS-255: added method get_target_observation_task_name_from_requirements_doc and use it to determine the main target observation. Then apply the constrains on the main target observation instead of on the assumend 'Observation'-called-task.