[FIX] web: keep pager in popup list view

When an action opens records in list (or other) mode in a popup (target:new), the pager should be kept. It can be removed in form view.
Fixes #742
[FIX] mail: partners with missing/invalid emails must not halt notifications to others
[FIX] web_kanban: wrong condition to reset the dataset index

This is related to rev. a218a9ed3f6c965820f2ebdf76ee0e6c89c59a0c

The condition is good, but not in the right place: It should be done once all read_slice (all columns records) are fetched, not at each read_slice end
[MERGE] forward port of branch 7.0 up to be7c894
[MERGE] forward port of branch saas-3 up to f7a76cb
[IMP] point_of_sale: show traceback when there is a posbox error
[FIX] web: regard the view_list has valid if not yet loaded

This fix is related to df845940ed52040ef92b1b5759306c556fa38e66

Fixes #3469
[MERGE] forward port of branch 7.0 up to 9a37e5a
[MERGE] forward port of branch saas-3 up to c11451c
[FIX] ir_qweb, website_blog: Allow to pass inline style as an option for the widget image. And change some img from blog to use this widget
[IMP] models: improve _mapped_func(), and add parameter 'reverse' in sorted()
[FIX] Report: get_pdf:  don't miss main elements when parsing html

Main elements can have more than one class, thus can be ignored by the previous
naive xpath. This patch brings a stronger xpath.
[FIX] product: pricelists based on the supplier prices now return first supplier price if partner not in suppliers instead of returning 0

Without this, sale pricelists cannot be based on supplier prices as the partner is never a supplier so the price would be 0
Note: behavior change ok with fp
[FIX] mrp: chain product move and MO locations

When validating a SO containing a `make to stock` + `manufacture` product
(with bom + orderpoint), we have the following stock moves:
* Product move
* Manufacturing order
Selling 1 such product would yield 2 as incoming quantity, an
inconsistency that this commit solves by setting the location_id of the
product move to the MO's location_dest_id (in the same fashion that
the create_pickings method does in an mts/buy case)

opw-616229
[FIX] ir_qweb: contact widget: use name_get instead of display_name

display_name field is overidden in res.partner in order to pop the context
key leading to show the address, and we want the address.
[FIX] web: inhibit on change flag when validating editable list

To valid all editable list line, we iterate on the lines and set the editor form with the line value, using set_value.
The _inhibit_on_change_flag should be set to True to avoid triggering on changes events

opw-617395
[MERGE] forward port of branch 7.0 up to cd69dee
[MERGE] forward port of branch saas-3 up to c666030
Revert "[FIX] mrp: chain product move and MO locations"

This reverts commit 61a8971db510dbb0e087bba09858fe8b94c7b16d.

This rev. is from a 7.0 forward port b4d602fdd3379a0310ec0b9a56f9b88226

This is no longer needed in 8.0, with the new WMS
[IMP] account: (over)due payments report

The report includes all due payments, not only the one after the maturity date.
The maturity date is displayed in the report so no confusion is possible for payments below the maturity date.
Fixes #3064