[FIX] web_calendar: Revert d9e6a7a as was fixed differently at rev e220136

Fixing calendar view errors, opw 609989
[FIX] base: make ir_attachment._filestore callable with kwargs
[FIX] l10n_lu: taxes (amont/aval)

The accounts "TVA en amont" were not used by the l10n_lu chart of accounts.

Instead the accounts "TVA en aval" were used for all taxes both sale and purchase taxes.

(Manual rebase of PR #735)
[FIX] l10n_lu: wrong mapping of accounts to P&L financial report

Account 655 and its child 6554 were both mapped.
Fixed by unmapping 655 and mapping all its direct children.

(Manual rebase of PR #733)
[FIX] tools: mail: fixed last commit, solving an issue with the html2plaintext introduced another issue with notes. Reverting to the first version.
[FIX] website_forum: fixed karma computation, on first vote the karma was wrongly calculated (when creating a vote, not when updating it).
[FIX] project: default_groups_ref expects the format module.xml_id (opw 610098)
[MERGE] forward port of branch 7.0 up to 7a928b1
[MERGE] forward port of branch saas-3 up to 24484c8
[MERGE] forward port of branch saas-4 up to de696f1
[FIX] project_mrp: prevent crash during installation if stock is not installed; use default view for product coming from the product module that is indeed in the dependencies.
[FIX] website_sale: add shop/pricelist controller
Merge pull request #1206 from odoo-dev/saas-5-pricelist-controller-chm

[FIX] website_sale: add shop/pricelist controller
[FIX] website_sale: do not set t-field in option

t-field in option input (select > option) is not supported
[IMP] Solve traceback in website forum while update country in myprofile