Dates are necessary for calculate Price using predicate.

Archived has the same security as Published, however it is not listed on Web Site listboxes.

  Idea: This should be improved to reuse proxyfied field method
        instead directly.

  This is required by Listbox for example in order to cache per list_start.

  Use OFS.Cache.Cachable to cache result outcome (html) of forms and
  fields for ERP5Form.

  Include Cacheable setup on ZMIField and extend render_htmlgrid.

Added aggregate item and item creations actions on new portal types.

Implemented Returned Orders like any other Order.

 Fix Image Conversion by using sRGB instead RGB, because it seems that using
 'sRGB' instead of 'RGB' makes a good result for RGB input, because imagemagick
 assume that input's colorspace is sRGB if not specified.

It includes minor improvements.

 Introduce temp_object parameter on builder.build() and propagate it
 over until the newContent() calls. This change allow use create
 Temporary Documents intestead real ones, like a "preview".

Person information must be consistent, so it allow any project define appropriate constraints.
You can only progress if you are logged in, otherwise show a button to user to login form.

Renamed SaleOrder_finalizeShopping to WebSection_finalizeShopping.

* This commit should be rebased before be really released.

SaleOrder_viewConfirmAsWeb is a duplication of SaleOrder_viewAsWeb