Csv viewer for comparisons
Added viewer for csv files that displays their content in html table
- Modified diff_controller.js to display csv files in html tables in comparison using CsvToHtmlTable javascript library
- Added _csv.html.haml to display the files in comparison
- Added initCsvToHtmlFunction.js to save function which initializes html table from csv file
- Added csv_comparison_iframe.html to save all necessary scripts for html table initialization