update database spreadsheet
adding total sum to end of column
edit output for multiple register in data.js
edit main comment in scanner.js
fix conflict between master and new-gui
fixe merge conflict db.xlsx., db_orig.xlsx
update sql dump, remove unneeded db.xlsx file
add statistics collector from previous events

average of previous data is now collected at start, selectFrom method added to mysql object to make queries easier
add sql data dump for 10_30_2014