Code cleaning

LoadPackages.R

 if (!require("Rcpp")){
   install.packages("Rcpp")
 }
-
+if(!require(shiny)){
+  install.packages("shiny")
+  library(shiny)
+}
 if(!require(shinydashboard)){
   install.packages('shinydashboard')
   library(shinydashboard)

server.R

 source('LoadPackages.R')
-library(shiny)
 renderDataTable <- DT::renderDataTable
 dataTableOutput <- DT::dataTableOutput