TMSS-379: Stations are now specifiable as one of an explicit group, with individual defaults for minimum nr of stations per group

TMSS-379: Station specifications start focussing on groups & max missing. Fixed station lists are a custom group with 0 missing.

TMSS-343 Change pointing angle test values, these schould be below 2 pi radians

Closes TMSS-343

See merge request !236

TMSS-000: do not cycle test data through state, because the finished state sets the start time to now

TMSS-000: made LOFAR_DEFAULT_EXCHANGE configurable via environment. defaults to 'lofar' as it used to be

TMSS-334 Create view to derive taskblueprint status from subtask status as described in design

Closes TMSS-334

See merge request !225

Resolve TMSS-300

Closes TMSS-300

See merge request !233

TMSS-000: dockerize_TMSS needs artifacts from build_TMSS, and those are only passed from one step to the other by using "dependencies". Current gitlab CI/CD forbids use of both "dependencies" and "needs" in one step. 

Resolve TMSS-368

Closes TMSS-368

See merge request !235

TMSS-316 Review myself, update the remakemigrations.py script which have to be in sync with the 0002_populate.py

TMSS-368: JSONEditor updated to work with external referenced schema for custom properties like pointing.
Scheduling Unit edit page updated.

# Conflicts:
#	SAS/TMSS/frontend/tmss_webapp/src/layout/components/PageHeader.js

Conflict Resolved.

Scheduling Unit Create page opening issue fixed
Task View close button click naviation issue fixed
Add Scheduling Unit menu from project view in collapsed mnu solved.

Resolve TMSS-302

Closes TMSS-302

See merge request !234

TMSS-368: Added definitions for external reference to keep custom fields intact and hiding $Schema field in editor

TMSS-000: updated the -dependencies- needs so the appropriate step is blocked when a predecessor fails

# Conflicts:
#	SAS/TMSS/frontend/tmss_webapp/src/App.js

Resolved conflicts and updated timeline routing path

TMSS-000: use new gitlab CI/CD feature 'needs' which replaces 'dependencies' and results in faster executing pipelines because jobs from different stages can run at the same time.

Resolve TMSS-363

Closes TMSS-363

See merge request !232

TMSS-276 Add id #duration and #target_pointing to the target observation json schema and #duration to the calibrator observation json schema

Resolve TMSS-346

Closes TMSS-346

See merge request !222

TMSS-352: Date Range Selection Added, zoom options updated