[FIX] mail: fixed bounce email recognition + invite email headers + mass mailing statistics not lost anymore
- [FIX] bounce regex: too many emails were considered as bounce and therefore
not displayed in the chatter and lost for the communication history. The regex
was not correctly looking for the bounce alias in the email_to.
- [FIX] invite email: replying to the invitation email (invitation as new
follower) now replies to the user sending the invitation.
- [FIX] mass_mailing: added a column to store the id of the original email
in addition to the many2one column. The many2one is set to null when deleting
the original email. As the information is necessary, it is saved on another
field. The many2one is necessary for indexes purpose as the inverse of
a one2many.

[FIX] account_followup: total in foreign currency displayed in the right currency instead of company currency

[FIX] account, point_of_sale: fixed the feature to put money in or take money out of a cash register. Fix #1416

In combination with f28be81b, this should help speed up
initialization of new boolean columns. psycopg2 handles
bool parameters values just fine inside cr.mogrify()

Inadvertence error during the convertion to the new API.

line_ids is already a list, no need to set it again in a list.

Boolean fields always default to False in 8.0,
even when they do not have explicit default values.
This causes extra queries in the form:
  UPDATE <table> SET <bool_field> = false
      WHERE <bool_field> IS NULL;

Those are not necessary as the ORM automatically
folds NULL booleans to False, and can be very
expensive on tables with several million rows,
as the whole table may sometimes need to be
rewritten (can take dozens of minutes)

[FIX] web: form view: priority and kanban widgets cleaning, now more like classic form widgets (edit mode: use set_value, view mode: perform a write)

[FIX] sale_stock: product_id_change_with_wh should not call another method (product_id_change) using super, but self. Otherwise some overrides are lost, leading to issues with event-related products.

Some many2one fields happen to have several corresponding one2many fields,
typically with different domains. It is also the case for the field 'res_id' of
mail.message, where each model inheriting from mail.thread defines a one2many
based on that field. The fix ensures that when a relational field is updated,
all its inverse fields are invalidated.

The default values are computed by evaluating fields on a new record. The fix
retrieves values from the cache earlier, because in some cases, the evaluation
of a field invalidates a formerly evaluated field.

[FIX] ir_actions in website: allow to compute website_path even when creating a new server action (avoid crash then)

[FIX] stock_landed_costs: fixed several issues related to the computation and the accounting entries creation. Added a yaml test to cover the different split methods

[FIX] website_quote: Must remove id created by the javascript of scroll spy.

[FIX] website_quote: scroll spy is crazy if the user change quote template. Must remove id created by the javascript of scroll spy.

The extra parsing check is not necessary when we're
not validating inputs, because in that case the
values come from the database and are valid.
The validation is quite expensive due to calls
to strptime() + strftime().

This can give a performance boost on large databases
and should not be a concern in terms of access control
as the inheritance already grants access to the parent
records.

Avoid reading one record at a time, leading to multiple
calls to read() which is special-cased and even slower
than a normal one.

management to access documents in notification emails, as well as for the
'view quotation' link in portal_sale module.

models: added a get_access_action method: basically, returns the action to
access a document. It uses the get_formview_action by default (form view
of the document). However for some documents we want to directly go to the
website, leading to an act_url action for some documents. This method allows
this behavior.

portal_sale: get_signup_url now uses the mail.action_mail_redirect method
instead of directly redirecting towards a portal menu. This allows to fall
back on a standard behavior.

portal_sale: get_formview_action updated, to match actions tailored for
portal users.

website_quote: get_access_action of sale order updated. If the sale order
has a template defined, the returned action is an act_url (website view
of the quotation), not the form action anymore.

mail: fixed signature + company signature in notification emails. Even without
user signature, the company signature + access link should be correct.

portal: signup url in notification emali was not using the mail redirection
as action. It is now the case.

[FIX] email_template: when generating body containing the user's signature, add it as html as it is now pure html, not plaintext anymore.

[FIX] tools: html_sanitize: keep mako tags (<% ... %>), required for example in the portal sale quotation email.

manual fix of fp-style merge