- Update Opera and jQuery links

- Use `https://` (fix #172), including in prompt for URL and relevant code comments (where available and naturally not on namespaces)
- Comment out broken link in svg-editor.html
- Trailing space

editor/svgedit.js

@@ -15,7 +15,7 @@ svgedit = {
     SVG: 'http://www.w3.org/2000/svg',
     XLINK: 'http://www.w3.org/1999/xlink',
     XML: 'http://www.w3.org/XML/1998/namespace',
-    XMLNS: 'http://www.w3.org/2000/xmlns/' // see http://www.w3.org/TR/REC-xml-names/#xmlReserved
+    XMLNS: 'http://www.w3.org/2000/xmlns/' // see https://www.w3.org/TR/REC-xml-names/#xmlReserved
   }
 };