Add JSFrame implementation for report window

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

board/templates/board/post_detail.html

@@ -78,7 +78,6 @@ function openReplyWindow() {
         url: REPLY_URL,
     });
     window.top.replyWindow.show();
-    window.top.replyWindow.on("hid", (frame, info) => console.log("hidden"));
 }
 
 function replyTextbox() {

board/templates/board/report_success.html

@@ -20,7 +20,9 @@ function isIframe() {
 
 setTimeout(function() {
     if(isIframe()) {
-        window.top.reportWindow.close();
+        if(typeof window.top.reportWindow !== "undefined" && window.top.reportWindow) {
+            window.top.reportWindow.closeFrame();
+        }
     } else {
         window.close();
     }