TMSS-1967

See merge request !960

Resolve TMSS-1972

See merge request !959

TMSS-1967: updated the latest strategies from production from latest commit with the changes from master in git

TMSS-1967: manually examined all schemas and templates for having the correct versions and having the correct references

TMSS-1989-fix: Priority_queue issue, showing blank page on error issue and...

See merge request !958

TMSS-1967: remove all legacy schemas (as a major cleanup in git. These will not be repopulated to production where they came from)

TMSS-1989-fix: Priority_queue issue, showing blank page on error issue and blank constriant editor issue are fixed

Resolve TMSS-1878

Closes TMSS-1878

See merge request !951

TMSS-1939

Closes TMSS-1939

See merge request !955