HR settings tab of the employee form view was quite ugly. The inherits were causing
a strange layout. It is now fixed. Some items have been relocalized to ease
the readability of the form view.

broadcast_welcome method was defined on hr.applicant, but called on hr.employee
records.

Currently each new applicant creates a message on the job. This creates
a lot of noise. The 'New application from ..' messages is therefore
removed. The related subtype is also removed because not used
anymore.

This reverts commit 00adbd36.

Will produce warning during export of terms

Should not include all the account names. Was exported after l10n_multilang
install.

'If you change the pricelist of this order (and eventually the currency)
,prices of existing order lines will not be updated.'

Remove from the list of translatable modules the modules that do not contains
any term and have empty .pot file.

website: remove duplicated terms from .pot

To integrate the list of new modules or renaming

Compute attachments on products and templates. For templates, attachments are the
one from the template and its products. Add a link in the views redirecting
to the attachments. Digital prodcuts effetively have attachments for their
content. Being able to see them quickly is interesting.

Among a lot of views tweakings and cleaning, some changes are listed here.

product
- add currency_id, taken from the company

stock
- procurement request and inveotry adjustement wizards now correctly work
  on product and templates with 1 or more variants. With one product the product
  field is readonly, with a template and/or a product with variants the
  product field is limited to the existing varians.
- valuation and cost method fields on the templates now come from property
  fields defined on the template, or from property fields defined on the
  product category. It allows to define those fields directly from the
  category.Among a lot of views tweakings and cleaning, some changes are listed here.

membership
-  details not visible in the default product view. However there is a specific view
to use in (membership / configuration / create member product)