refactor + macro fixes + theme system

static/cookieStuff.js

@@ -0,0 +1,17 @@
+function setCookie(name, value, days = 365) {
+    const d = new Date();
+    d.setTime(d.getTime() + (days * 24 * 60 * 60 * 1000));
+    let expires = "expires=" + d.toUTCString();
+    document.cookie = name + "=" + value + ";" + expires + ";path=/;SameSite=Lax";
+}
+
+function getCookie(name) {
+    let nameEQ = name + "=";
+    let ca = document.cookie.split(';');
+    for (let i = 0; i < ca.length; i++) {
+        let c = ca[i];
+        while (c.charAt(0) == ' ') c = c.substring(1, c.length);
+        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
+    }
+    return null;
+}