Add select all button to modals

web/utils/urls.ts

@@ -0,0 +1,10 @@
+// Stolen from https://stackoverflow.com/a/5717133
+export function isValidUrl(url: string): boolean {
+    var pattern = new RegExp('^(https?:\\/\\/)?'+ // protocol
+    '((([a-z\\d]([a-z\\d-]*[a-z\\d])*)\\.)+[a-z]{2,}|'+ // domain name
+    '((\\d{1,3}\\.){3}\\d{1,3}))'+ // OR ip (v4) address
+    '(\\:\\d+)?(\\/[-a-z\\d%_.~+]*)*'+ // port and path
+    '(\\?[;&a-z\\d%_.~+=-]*)?'+ // query string
+    '(\\#[-a-z\\d_]*)?$','i'); // fragment locator
+  return !!pattern.test(url);
+}