corr_obs_TMS updated with gaps in measurements and automatic detection of the gaps

t0_phys changed from Bruno et al to the value from internal analysis

corr_obs_TSM now supports different statistics between sloppy and correction without neglecting the correlation. Extra flags idm_corr, idm_sl, nms have been added to allow this feature.
Documentation added

Study and preliminary tests  on correlated fits

added Mb physical in const

functions returns uwreal not a Vector{uwreal}

functions returns uwreal not a Vector{uwreal}