Fix PDF rendition link on PNG file if document path contains a quote

FacesManager seems to be unable to get the current conversation id if the URL contains a quote, which comes from the document path.

In this case, the conversationId is incremented, which could be a problem where storing information in the context, like the Faces messages.

Step to reproduce :
1. Install Template rendering addon
2. create a File document whose title is "Fêtes de fin d'année" and upload a PNG file
3. Click on "PDF" in the available renditions
4. The system returns on the summary, the rendition fails but nothing is displayed