Parse href in findLinks with QUrl::fromPercentEncoding

This allows for both internal and external links containing percent escaped characters to be parsed correctly.
Previously, http://example.com/foo%26bar was parsed as http://example.com/foo%2526bar instead of
http://example.com/foo%26bar (http://example.com/foo&bar). Same issue for other escaped characters.

According to the docs for the QUrl constructor, in it's default parsing using TolerantMode, it'll only
transform %20 back to space, and will treat all other % signs as raw symbols to be encoded.

src/lib/pdfconverter.cc

@@ -566,7 +566,7 @@ void PdfConverterPrivate::findLinks(QWebFrame * frame, QVector<QPair<QWebElement
 		if (h.startsWith("__WKANCHOR_")) {
 			local.push_back( qMakePair(elm, h) );
 		} else {
-			QUrl href(h);
+			QUrl href = QUrl(QUrl::fromPercentEncoding(h.toLocal8Bit()), QUrl::StrictMode);
 			if (href.isEmpty()) continue;
 			href=frame->baseUrl().resolved(href);
 			QString key = QUrl::fromPercentEncoding(href.toString(QUrl::RemoveFragment).toLocal8Bit());