#4 Check selfUrl for url parameters already added

[Anonymous]

Make HTMLRenderer.showNavigation check if selfURL
already contains a get parameter:

For example:

// url when selecting folder or text
StringBuffer selectURL=new StringBuffer();
selectURL.append("<a href=\"");
selectURL.append(tview.getSelfHref());

// Check if a url parameter has already been added to
the url
// If so use an ampersand
if (selectURL.toString().indexOf('?') < 0) {
selectURL.append("?");
} else {
selectURL.append("&");
}
selectURL.append("select=").append(URLEncoder.encode(currentNodeId));
selectURL.append("\">");

Needs to be applied to branchURL too.