update alert atof ccdb readin

[zhiwanxu]

6/2 we update the ccdb time_offset constants, with the slope (extra1) and ref_run (extra2) per run-period from timeline calibration. This is to update the reconstruction code of atof hits to be able to read in that column of constant.

[zhiwanxu]

https://github.com/JeffersonLab/coatjava/tree/iss-1297#