WS-1405 Fix matrix service's CAPO properties

See merge request !1677

Switched returns to raises for error responses in views where a db transacation appeared to be open with some modified data

See merge request !1676

Switched returns to raises for error responses in views where a db transacation appeared to be open with some modified data

WS-1405 CASA matrix service

See merge request !1670

Using a new column on the capabilities table to store CAPO keys to get the default CASA paths rather than that ol' constant dict

make sure people can't create duplicate entries in the matrix

See merge request !1675

Raising instead of returning error responses to rollback potentially partially committed transactions

Moving new symlinks into the pre-existing env dir (if exists) to preserve the pre-existing links (specifically the 'default' one)

Corrected moving the recommended version to the front of the list and properly sorted the flattened installed versions list by the version names to put the most recent at the top

Fixing a logic error in get_version by simply calling get_versions and returning the recommended version

PIPELINE TESTING: Playing with shared/workspaces testing

See merge request !1614