Rework RRD resolutions

Keep way less data, this is not a space issues. Simply that we don't
need that much data. It doesn't reveal anything.

Now we keep:

Hourly: 1 data each minutes
Daily: 1 data each hour
Weekly: 2 data per day
Monthly: 1 data each day
Yearly: 1 data each week

This should generate much easier to read graph.
Delete example website
Add tools folders with shell scripts
Change main behavior

Before, Tesla was updating an RRD database and creating graph
automatically.
Now, it will only update and fill its RRD database.

The graph can now be generated with the help of the provided scripts or
by any means you choose.

Note: The resolution of the RRD database has been changed to produce
meaningfull graph.