Suppress messages when packages are loaded

[jgabry]

Wrap all these calls to library() in suppressPackageStartupMessages():

shinystan/inst/ShinyStanModules/global.r

Lines 2 to 6 in 02c5300

	library(shiny)
	library(bayesplot)
	library(dplyr)
	library(ggplot2)
	library(shinyjs)