Adds back in favicons :shocked:, adds back in js and changes the name for better understanding

_includes/theme.js

@@ -0,0 +1,14 @@
+// Data attribute switch
+var toggleState	= function (elem, one, two) {
+var elem	= document.querySelector(elem);
+elem.setAttribute('data-state', elem.getAttribute('data-state') === one ? two : one);
+};
+
+// Mobile navigation toggle selector
+var buttonMenu = document.querySelector('.button--nav');
+if (typeof(buttonMenu) != 'undefined' && buttonMenu != null) {
+	buttonMenu.onclick = function (e) {
+		toggleState('.nav', 'open', 'closed');
+		e.preventDefault();
+	};
+};