[IMP] point_of_sale: field company_id on pos.config view

Move invisible field on bottom to avoid blank space in view if display journal, group or sequence field
[FIX] models: in onchange(), do not send a field value if it has not changed

The method onchange() executes onchange methods in cascade.  Suppose onchange()
is called and a field F=1 in the form.  If an onchange method set F=2, that
value is put in the result variable.  If another onchange method set it back to
F=1, the binding F=2 must be removed from the result variable.

Fixes #2309
[FIX] web: modals: overflow-x on modal-body to prevent large content to be displayed outside
[FIX] web: about odoo: correct bootstrap structure inside the modal

Bootstrap's container class has a fixed width, using it in a modal
with the previous commit allowing an horizontal scrollbar makes the
layout goes crazy. Use container-fluid instead and cleaned some css.
[FIX] website_forum: header template: double display of questions

The <t t-raw='0'/> is already defined lower in the view (line 101)
[FIX] fields: in computed fields, handle AccessError and MissingError

When computing a field on a recordset, a subset of the records may be missing
or forbidden by access rules.  In that case, evaluate the compute method record
by record, and mark failed records as such in cache.
[FIX] web: scroll should move top on clicking menu on top bar

Backported from 97d99d1974c965506ed9005d4854fcc5ffee0590
[IMP] website_blog: more generic xpath expression when inheriting view. ease migration.
[FIX] stock: multicompany warehouse creation

When creating a new warehouse, the linked locations should have the same company as the warehouse.
The company_id field is required on warehouse (not necessary in vals as could be added by default values) while it is not for stock.location (meaning global location, also filled with default value).
[FIX] report_webkit: re-enable test, disabled during new API developement

Requires an extra use_global_header to be added on
the report record, to mimic the super.create()
behavior, as super.create() is not called.
[FIX] website: do not bind do_customize to menu without data-action
[FIX] website_forum: moved editor-related js files into the editor asset
[FIX] website: customize menu, only a with data-view-id should actually call do_customize
[FIX]stock_account: missing default value for Inventory Valuation
[FIX] report: /report/download route should not be website enabled

There's a little magic inside the website enabled route modifying the
context's lang, thus breaking the logic to print the report in the
current user's lang. The direct route to display the report should
stay in website_enabled mode, as it allows to switch lang, use the
website translator and so on.
[IMP] Old hack where uom_id had to be empty in on_change

[IMP] Add purchase order origin on picking

[WIP] Picking type on move for location on routing

[IMP] Provide extra function for custom buttons on picking

[IMP] Action assign optim

[IMP] Push apply should take invoice_state into account.  Propagation of cancel of stock moves should depend on procurement rule
[IMP] Make sure property_ids on sale order line are visible and able to work
[IMP] Inter-company pricing: put price on move when only partner and not connected to sale or purchase + invoice_state inverse function
[WIP] Pricelist of purchase is not in stock only and remove product_manufacturer module in view + manufacturer
[IMP] Patch for boms that explode in boms to have the correct quantities courtesy of chm