erp5_officejs_support_request_ui: add preferred_event_resource and preferred_attached_document_classification for support request web site

not user friendly

this fix serach issue when page has listbox

1. add brand
2. facebook like button, twitter share
3. display correct currency symbole
4. product is always available: user can purchase then we order from customer
5. change cache policy

and not safe to install erp5_immobilisation on nexedi erp5

    **** Warning: considering '0000000000 XXXXX n' as a free entry.

https://codeyarns.com/2014/03/10/free-entry-warning-with-ghostscript-and-imagemagick/

> This warning turns out to be from the Ghostscript program, which is used by
> ImageMagick internally to perform this format conversion. This page explains
> that this error has been fixed in a recent version of Ghostscript. I used a
> newer version of Ubuntu, that is 13.11, that had a newer version of gs and I
> was able to perform the format conversion. It still gave off the warning,
> but the conversion was done.

Image.py tells imagemagick to convert to stdout.
Warnings are also returned via stdout before actual rendering.