The WIDER project is built on top of the Wazimap library, which is built on Cencus Report. It is built in Django which is a python library, that uses postgresql as a database framework.
To install a local dev inviroment follow the instructions on install.txt
For further documentation go to: https://github.com/OpenUpSA/wazimap-za
Click through to WIDER/wazimap_ww for more info on how to add charts.