Remove local UI (i.e Foundation, Bootstrap etc) files and JS and CSS framework files and replace them with cdn links for those files. This will make updating the frameworks easier since it will only be links that will be changed in the template files.
Actually just give option to include or exclude jquery
Look into minimalist css frameworks and choose a very light weight one that can be included or excluded (eliminating the need to include stuff like Foundation, Bootstrap, Materializecss, etc. Let users switch to those if they want but make the templates and views not heavily tied to whatever lightweight css framework is chosen from below):
Remove local UI (i.e Foundation, Bootstrap etc) files and JS and CSS framework files and replace them with cdn links for those files. This will make updating the frameworks easier since it will only be links that will be changed in the template files.