rewrite* most web ui code in typescript

i wanted to split up the web ui components into multiple files, and
figured it'd be a good chance to try out typescript. run make typescript
to compile everything in ts/ and put it in data/static/.

This is less of a rewrite and more of a refactoring, most of it still
works the same but bits have been cleaned up too.

Remaining javascript found in setup.js and form.html

ts/serialize.ts

@@ -0,0 +1,34 @@
+function serializeForm(id: string): Object {
+    const form = document.getElementById(id) as HTMLFormElement;
+    let formData = {};
+    for (let i = 0; i < form.elements.length; i++) {
+        const el = form.elements[i];
+        if ((el as HTMLInputElement).type == "submit") {
+            continue;
+        }
+        let name = (el as HTMLInputElement).name;
+        if (!name) {
+            name = el.id;
+        }
+        switch ((el as HTMLInputElement).type) {
+            case "checkbox":
+                formData[name] = (el as HTMLInputElement).checked;
+                break;
+            case "text":
+            case "password":
+            case "email":
+            case "number":
+                formData[name] = (el as HTMLInputElement).value;
+                break;
+            case "select-one":
+            case "select":
+                let val: string | number = (el as HTMLSelectElement).value;
+                if (+val != NaN) {
+                    val = +val;
+                }
+                formData[name] = val;
+                break;
+        }
+    }
+    return formData;
+}