only use alpha channel if it exists
[FIX] web_diagram, unlink connectors/transitions between nodes from the diagram view (transitions IDs sent to the web client were strings instead of integers)
[FIX] sale: translate advance message on advance invoice
[FIX] mail: set the parent_id to the first message of type email

And fallback of any type if there is none of type email

This fix allow the communication between two mail thread from two different Odoo servers having message creation subtypes, like project issue or crm lead
[FIX] point_of_sale: fixed rounding issue for pos order when discount added(maintenance: 615322).
[FIX] account_followup: do no duplicate partner's account.move.line

Duplicating a partner should not duplicate the content of the unreconciled_aml_ids field.
[ADD] doc: basic index page instead of something completely blank
[FIX] website_sale: trigger the change event on the right node
[FIX] l10n_fr_hr_payroll: report "Fiche de paye"

Avoids getting False for the field end_date (Sortie) in case of no end date specified on the contract. opw 614624
[FIX] l10n_fr_hr_payroll: bad copy-paste in 69c1333
[FIX] account: bank statement reconciliation incorrect rounding
[IMP] account: reconciliation widget: load list of move lines in a single RPC call with limit set. It drastically improves performances on big databases.
[FIX] account: reconciliation widget: for reconciliations with no partner, allow to select move lines from any partner and apply global move lines exclusion.
[FIX] account: the partner of a bank account can only be a company or an individual not related to a company
[FIX] res_partner: add parent_name related field

In some cases (e.g. with record rules), the name_get might not have access
to the parent name. Therefore a parent_name related field solves the
issue (as it read with as superuser).
[FIX] auth_signup: refresh is no longer needed with the new api

Besides, it leads to a invalidation of the cache, which is not needed here.
[FIX] account: default product taxes on product.template

As product.template is now most commonly used than product.product

This is related to fix 96dd8bf
[FIX] website_sale: image doesn't change when the user select a product (for product variant list). website_sale_options: image dones't change in modal with the selection
[FIX] {web,point_of_sale}: allow cross-origin access to company logo
[FIX] website_forum: respect karma when posting questions/answers/comments + more user-friendly errors

While posting new questions and answers the check
for karma limit was bypassed because it was using
super-user mode: use regular user instead.
Also improve the user feedback when karma level is
too low to perform some actions: post comment,
post question, post answer.
The usability in these cases still needs to be
improved.
[DOC] cmdline: database-related parameters