Remove unused typescript, update config readme

ts/modules/common.ts

@@ -1,11 +1,5 @@
 declare var window: Window;
 
-export function createEl(html: string): HTMLElement {
-    let div = document.createElement('div') as HTMLDivElement;
-    div.innerHTML = html;
-    return div.firstElementChild as HTMLElement;
-}
-
 export function toDateString(date: Date): string {
     const locale = window.language || (window as any).navigator.userLanguage || window.navigator.language;
     const t12 = document.getElementById("lang-12h") as HTMLInputElement;
@@ -27,49 +21,6 @@ export function toDateString(date: Date): string {
     return date.toLocaleDateString(locale, args1) + " " + date.toLocaleString(locale, args2);
 }
 
-export 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 = (el as HTMLSelectElement).value.toString();
-                if (!isNaN(val as any)) {
-                    formData[name] = +val;
-                } else {
-                    formData[name] = val;
-                }
-                break;
-        }
-    }
-    return formData;
-}
-
-export const rmAttr = (el: HTMLElement, attr: string): void => {
-    if (el.classList.contains(attr)) {
-        el.classList.remove(attr);
-    }
-};
-
-export const addAttr = (el: HTMLElement, attr: string): void => el.classList.add(attr);
 export const _get = (url: string, data: Object, onreadystatechange: (req: XMLHttpRequest) => void): void => {
     let req = new XMLHttpRequest();
     if (window.URLBase) { url = window.URLBase + url; }