Rework typescript to use modules

web UI now uses modules, and relies less on bodge to make things work.
Also fixes an issue where invites where "failed to send to xx" appeared
in invite form.

ts/modules/bs4.ts

@@ -0,0 +1,45 @@
+declare var $: any;
+
+class Modal implements BSModal {
+    el: HTMLDivElement;
+    modal: any;
+
+    constructor(id: string, find?: boolean) {
+        this.el = document.getElementById(id) as HTMLDivElement;
+        this.modal = $(this.el) as any;
+        this.modal.on("shown.b.modal", (): void => document.body.classList.add('modal-open'));
+    };
+
+    show(): void { this.modal.modal("show"); };
+    hide(): void { this.modal.modal("hide"); };
+}
+
+export class BS4 implements Bootstrap {
+    triggerTooltips: tooltipTrigger = function (): void {
+        const checkboxes = [].slice.call(document.getElementById('settingsContent').querySelectorAll('input[type="checkbox"]'));
+        for (const i in checkboxes) {
+            checkboxes[i].click();
+            checkboxes[i].click();
+        }
+        const tooltips = [].slice.call(document.querySelectorAll('a[data-toggle="tooltip"]'));
+        tooltips.map((el: HTMLAnchorElement): any => {
+            return ($(el) as any).tooltip();
+        });
+    };
+
+    Compat(): void {
+        console.log('Fixing BS4 Compatability');
+        const send_to_address_enabled = document.getElementById('send_to_address_enabled');
+        if (send_to_address_enabled) {
+            send_to_address_enabled.classList.remove("form-check-input");
+        }
+        const multiUseEnabled = document.getElementById('multiUseEnabled');
+        if (multiUseEnabled) {
+            multiUseEnabled.classList.remove("form-check-input");
+        }
+    }
+
+    newModal: ModalConstructor = function (id: string, find?: boolean): BSModal {
+        return new Modal(id, find);
+    };
+}