updating lvalert plotting scripts

...l-inspiral/bin/gstlal_inspiral_lvalert_background_plotter

...nspiral/bin/gstlal_inspiral_lvalert_generic_plot_uploader

gstlal-inspiral/bin/gstlal_inspiral_lvalert_omegascan

...nspiral/bin/gstlal_inspiral_lvalert_pastro_rate_posterior

...nspiral/bin/gstlal_inspiral_lvalert_snrtimeseries_plotter