Check existence of  array indices before using them.
Rename classes to PSR-0 compatible format
Add composer autoloader.
Mark hard-to-complete task in task file as impossible.
Add sample of routing use.
Drop av_ file prefix. Rename MyDateTime file to be consistent with class name inside.
Drop av_ file prefix from .htaccess
Add comment for further development.
Add SEO aims.
Add task to do later.
Add task to do later.
Fix routes to have no php file names, and to have .js files included, not av.js

avjs extension was introduced before to avoid worm infection. This danger is off now.
Set up routing system to work now.

It doesn't have classes still, operates with files.
However, now all routes are concentrated in one place.
And routes are ready to be placed in yaml or xml file now.
Move index.php file to controllers.
Move php files from root folder to /controller folder.

It is to later switch them to classes.
Add loadController method.
Pass parameters to graph and trend files.