- This function merges the .csv files in the "ExportData" folder into a single
.csv file in "ExportData/combined_file.csv".
The function takes no inputs and attempts to include .csv files with data
from all TV shows (except from "Mom", the data from which has been ignored).
If a given .csv files does not exists, it is ignored in "combined_file.csv".
The exported "combined_file.csv" is used to plot the datasets using dygraphs