Set undefined array index defined.
Allow array to be empty.
Split graph and trend controllers.
Add new routes for special graphs (not working still).
Add display errors values in .htaccess. It is commented out for prod server.
Extract bullet class to remove code duplication.
Delete comment.
Rename variable for easier understanding.
Delete unused code.
Add Weight::isDisplayed() method to decrease code duplication in trend and graph controllers.
Fix variable passed.
Set $bulletsize to be the same for both scripts.
Extract MyDateTime class to separate file.