ImproveOSM is now fully supported as in the main OpenStreetMap editors. Because of that, there is no longer a need for the custom ImproveOSM editing environment, and this project is no longer available or supported.
If you are interested in using ImproveOSM data to edit OpenStreetMap, please check out our JOSM plugin or select the ImproveOSM overlay in iD. You can also download the raw data from our ImproveOSM web site.
Thanks for using ImproveOSM and making OpenStreetMap better!