[REM] l10n_fr_rib module

RIB format is no longer accepted by banks (replaced by SEPA) since 1st of August 2014, in regards of #3331
[FIX] l10n_fr: remove depedency to l10n_fr_rib

Cherry-pick of 4ff1c7c required due to fe1b2c0
[FIX] event_sale: workaround for broken view.

Non-stored fields created with the new API are not converted to old
fields and added in `_columns` (and thus `_all_columns`). This forbid
them to be used in qweb views.
A fix will be commited in 8.0 to address this issue.
[ADD] Website KeyCDN integration guide
[IMP] stock_account: stock journal in multicompany

Restrict the property_stock_journal to the main company only. This avoids errors in multicompany when the stock journal of the main company (getting an error company mismatch) is used instead of a more useful message explaining the missing stock journal.
Fixes #3251
[IMP]Export Wizard: Improve code to not remove fields from "Fields to Export"on Export all data and remove noncompatible field on selecting Import Compatible Option