Files:
index.php - home page;
conf.php - configuration file;
join.php - registration page;
login.php - authorization script/module;
module.php - file with used classes for authorization, registration, user group check, etc.;
export.php - export data to *.csv;
data.php - table view of data;
file_upload1.php - import data to database from *.csv file;
chart1.php - building charts ;
insert.php - manual insert data to database;
script.js - script for locking checkboxes;
style.css - styles file;