This commit introduces a new view type, the timeline view. This view is
intended to display messages like the previous chatter. This is now a view
like the form or list view. Like other views it will be possible to have
custom templates for some specific needs, allowing customization.

[IMP] mail: the value tracking is modified. Previously messages were created
containing the modified values. Those values are now stored, using a new
model mail.tracking.value. The message body is dynamically build based on
the values. Tests have been updated.

This version is temporary. Indeed two main modifications will come in a short
future :

 - the new design will improve the display
 - the slack mode will change the way the Inbox and notifications are managed

All glory to the Hypnotoad.

Special thanks to Valerie Pirenne (vpi), Jerome Maes (jem) and Richat Mathot
(rim) that did not code but said a lot of things. Martin Trigaux (mat) did
nothing, a bit like for the slides modules, but he is busy sending emails.

[FIX] website_livechat: Pass correct name of class in super method to solve traceback on publish button

Now,
- event contains the HTML badge fields and the report (and report templates) to print badges
- event_sale add the ticket type on badges
- website_event allow the edition of badge throught website editor.
When the editor will be available in backend, event will be allow to edit badge report, so the action should be moved from website_Event to event module.

[IMP] account: set the date_maturity field on account.move.line as required for the sake of being more explicit, and having the aged receivable/payable reports that work

[IMP] account, account_reports, account_batch_deposit : improve kanban dashboard view to fit with new design

[REM] web_kanban_sparkline: module and dependencies (project, sale, sales_team, stock, mass_mailing)

The module was not used anymore.

[FIX] account, dashboard: wrong figures for graph and amounts in bank journal kanban box if there were several statements on the same day

mismtach.

more menu action linked to an email template.

[TESTS] mail: added a test for this method.

This reverts commit 6c0376e9.
It turns out that this javascript code was not unused after all.
(see kanban view inside customers, clicking on them should open the
contact in a popup)

The method will check all companies with a chart of account if they have a property for the stock journal.
If there is no stock journal it will create one.  Previously it created only one for the main company and this
gave an error when updating the module again

[MERGE] ormcache: improve API to enable the decoration of new-api methods

The new signature of `ormcache()` is more intuitive: simply list the names of the method arguments that compose the cache key. The decorators `ormcache_context()` and `ormcache_multi()` have been adapted accordingly.

The patch speeds up the cache invalidation in the registry, and make most
models use the generic method `clear_caches` instead of specific `clear_cache`
methods.

This fixes a bug on some methods.  Because `ormcache` uses the decorator
`decorator`, the `context` argument is passed positionally to the decorated
lookup method, instead of being passed as a keyword argument.  As a
consequence, the context dictionary is included in the cache key, which makes
the cache lookup fail all the time.

Using the new API of `ormcache` gracefully fixes this issue.

The new signature of ormcache() is way more intuitive: simply list the names of
the method arguments that compose the cache key (see documentation and existing
code).  A backward-compatible mode is available by using the keyword argument
`skiparg`.

- clean the planner style
- add specific class per planner crm (avoiding collisions)
- create .o_planner_white_box class used in all planners
- add planner for project module

[IMP] stock_account: counter/filter of invoiced pickings search now for pickings that are invoiced AND transferred

[IMP] stock: rename Available quantity into Forecasted quantity; hide reordering rules if product type is consumable