The link to the Exploration Tool on Fluid Project website is incorrect.

To reproduce:

1. Go to https://fluidproject.org/projects.html
2. Select the "Preferences Exploration Tool Demo"
3. Notice that the link goes to https://build.fluidproject.org/explorationTool which gives a 404 error.

The correct URL is:

https://build.fluidproject.org/prefsEditors/demos/explorationTool/