fixed posterior plots
Fixed some bugs in posterior sampling.
Here is the mathematical description for the posterior sampling https://www.overleaf.com/read/dwchwbthygdp
Here is a test run: https://ldas-jobs.ligo.caltech.edu/~vinaya.valsan/RapidPE/test_post_scripts_rift/S190828l_test7/20220804_gstlal_20190828_G348519/summarypage.html
Edited by VINAYA VALSAN