Hello,
there is some problem with webIDE, that excluding files/folders from build while deploying SAPUI5 application does not work. I already created ticket to SAP support, but I want to ask, whether there is some workaround that will enable me to do so omitting "project settings" tab (which gives me error each time I add folder to excluded "Cannot read property 'length' of undefined"). I guess it might be editable using project.json or manifest.json files, but i could not find any documentation on this. Do you have such information?