Fix #982 Analysis Retested icon disappears on ARs

https://github.com/bikalabs/Bika-LIMS/issues/982
Fix bikalabs/bika.health#56 Calculations. Re-tested results in dependant Analyses should trigger update of calculated result

https://github.com/bikalabs/bika.health/issues/56

Automatic calculations using ajax must only be done to analyses which
are not in retracted status