Test fixes for UrlParser, HtmlElementCreator

Also fix old parseQueryString and alias it to getQueryStringParam

tests/HtmlElementCreator.test.js

@@ -257,6 +257,41 @@ describe("ael", () => {
 				"tag": "div"
 			}
 		);
+		let test_cel = hec.ael(
+			hec.cel('div', 'block-id'),
+			hec.cel('div', 'sub-id'),
+		);
+		expect(hec.ael(test_cel, hec.cel('div', 'new-block'), 'sub-id')).toEqual(
+			{
+				"content": "",
+				"css": [],
+				"id": "block-id",
+				"name": undefined,
+				"options": {},
+				"sub": [
+					{
+						"content": "",
+						"css": [],
+						"id": "sub-id",
+						"name": undefined,
+						"options": {},
+						"sub": [
+							{
+								"content": "",
+								"css": [],
+								"id": "new-block",
+								"name": undefined,
+								"options": {},
+								"sub": [],
+								"tag": "div"
+							}
+						],
+						"tag": "div"
+					}
+				],
+				"tag": "div"
+			}
+		);
 	});
 });
 
@@ -640,11 +675,11 @@ describe("phfo", () => {
 				"id": "block test",
 				"in": hec.aelx(hec.cel('div', 'outer-id'),
 					hec.aelx(hec.cel('div', 'inner-id'),
-						hec.cel('input', 'some-id', '', ['abc'], {"type": "button", "onclick": "send()"})
-
+						hec.cel('input', 'some-id', '', ['abc'], {"type": "button", "onclick": "send()"}),
+						hec.cel('div', '', 'content')
 					)
 				),
-				"out": '<div id="outer-id"><div id="inner-id"><input id="some-id" name="some-id" class="abc" type="button" onclick="send()"></div></div>'
+				"out": '<div id="outer-id"><div id="inner-id"><input id="some-id" name="some-id" class="abc" type="button" onclick="send()"><div>content</div></div></div>'
 			}
 		];
 		for (const cel_entry of cel_list) {