remove unused script files
update scripts in tools/ to work with the new directory structure
Merge pull request #1571 from wordpress-mobile/issue/1569-scripts-are-not-working

fix #1569 scripts are not working
Preparing to tapping
Use GestureDetector.SimpleOnGestureListener and try to detect the tap on the bar.
Open details view when the user tap on a bar or show the details in a toast
Show details when the user taps on a Bar in the Graph.
Create the string with a formatter instead of building it manually.
Fix wrong import order.
Fix coding style issues