ADD CHECK FOR REMOTE/LOCAL DATA PATH TO SHINY

the local data path used for the shiny app is different on the shiny server than within the package. this checks and loads the proper path.
INCREASE PLOT HEIGHT AND ADD SIDE PANEL HEADINGS TO SHINY APP
FORMAT YEARS IN SHINY SLIDER INPUT TO ####

didn't want the commas in the formating of the sliderInput values for years.
ADD DESCRIPTIVE TEXT TO SHINY SIDE BAR
ADD TRANSPARENCY TO COUNT POINTS IN SHINY PLOT
REMOVE 'jitter' IN SHINY PLOT
ADD data_source COLUMN

wanted to be able to subset the data by general data_source groups so added a column that specifies 'NOAA-NMML','Pebble-ABR','ADFG','Mathisen-Kline'
UPDATE PLOTS TO COLOR BY data_source