HltEfficiencyChecker printing is mangled

HltEfficiencyChecker/hlt_calculate_rates.py tries to be clever about aligning the decimal when printing the final rate table. However, it is not implemented correctly and ends up worse than nothing. See the output:

Line:    Hlt2PID_BToKJpsi_JpsiToPmPpTagged_LineDecision          Incl: 0.13348461589801777 +/- 0.09 kHz, Excl: 0.13348461589801777 +/- 0.09 kHz
Line:    Hlt2PID_BToKJpsi_JpsiToPpPmTagged_LineDecision          Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:    Hlt2PID_DstToD0Pi_D0ToKPiPiPi_LineDecision              Incl: 1.8020423146232396 +/- 0.34 kHz, Excl: 1.7353000066742308 +/- 0.34 kHz

This is due to the fact that the errors are always truncated to 4 characters, while the central values are not.

Perhaps just limiting everything to two or three digits and right aligning would be better?