[x] Backend should - fixed by kbss-cvut/fta-fmea#132
store evaluated operational failure rate in ATASystem.failureRate.estimate. ATASystem is found in the arrayfaultEvent.supertypes.supertypes.
store failure rate and failure rate estimate in dedicated context which is common for all systems to avoid jopa single value property constraint violation exceptions.
[x] Frontend not showing operational failure - fixed by #493
ATASystem.failureRate.estimate
. ATASystem is found in the arrayfaultEvent.supertypes.supertypes
.