Adding a preset filtering system in a per projet fashion

[AlexandreRoy]

Right now, all the presets are shown in the drop down preset selection. For a project, the necessary presets might be an exclusive subset of all the presets and the other non useful presets are polluting the interface. In the screenshot, only the presets starting with H2O are relevant to the project.

One way to add the feature would be to have a button (in the presets section) that creates a popup and from there a list of checkboxes (or a any other compact widget) would allow the user to make the selection. This method would also provide a way to add presets later on in the project.