Add summary statistic calculation to get_UNHCR_population_data()
Add observer for handling click events on empty map
Add calculation of country-specific summary stats
Add help text and icon to action buttion
Modify help text
Add absolutePanel to UI and necessary CSS extensions
Move utils.R to rScripts
Add United Nations data
Update paths to data and R scripts
Update data set
Add map$clearShapes() to observer
Add radius calculation to get_UNHCR_population_data
Add missing word to instruction text
Add 'About' page
Finalize'About' section