And this give troubles with unit test checking prod branch

This is done by inheriting most of the code of ConflictFreeLog,
i.e. using a doubly-linked list:
- for fast iteration of the first elements, and in particular
  immediate access to the first element (used for creation date);
- that keeps track of the history length;
- that implement fast reverse iteration (although it could
  have been done without changing the data structure).

The size of buckets is not fixed anymore to 16 items:
like ConflictFreeLog, WorkflowHistoryList is also a good candidate
to look at the estimated serialized size of the bucket in order to
decide if elements should be added to a new one or not.
Then developers won't have to care about using Pdata or not.

The size is bigger than the ConflictFreeLog default,
because workflow items look a lot alike and adding
a few more is cheap when the ZODB compresses.

No more optimized __getstate__ (except for workflow histories that
have not been migrated) so BT export will be a bit more verbose.

The BBB code is because of
  nexedi/erp5!934

/reviewed-on nexedi/erp5!941

Exactly like prices and other properties, it is useful for some projects to define different
descriptions depending if we are doing sales or purchases

When we ignore variations, we should also ignore them when looking
to update existing orders

Fully rewrite portal_simulation.mergeDeliveryList to use builders to reconstruct new
merged delivery.

Add parameter "merge_delivery" to builder. This parameter is used when
merge should be done in such a way that movement group at delivery
level are ignored

in MRP, we have manufacturing execution having a mix of lines with
positive and negative values. It must be possible to use split and
defer solver in that case.

This is much more convenient to understand stock value at a given point in time

Creating a Software Publication doesn't require to change the Software Product.

And so, simplify the code logic, as product is always created before the publication

Do not wait too long when pushing a new application.

Do not modify document history if nothing changed

Set the wildcard URL on a system preference.

Those web site do not work in offline mode, so client must revalidate the components.

Update appcache

Drop unused scripts

Thanks to Vincent Bechu for his work on this commit.

As noted in a comment in this BT's Base_redirect implementation, original code
does raise when abort_transaction is true.
Not raising in this implementation means that this script will return to caller,
while it never does on original code.
Also, to add insult to injury, this utterly bogus implementation interferes with
transaction boundaries. So suddenly, a single publication spans over 2
transactions, which can lead to:
- ZODB Connection sharing, breaking transaction isolation
- the second transaction implicitly created by this abort (actually, by the next
transactional connector registration to transaction) may be committed,
in which case anything done after Base_redirect returns will be
persistently committed, against caller's explicitly specified intent, and against
all developer expectations.

NEVER TOUCH TRANSACTION ! Only CMFActivity and unittests are allowed
this level of access (and CMFActivity should be modified out of this exceptional
state).

Linshare Use the same configuration than ERP5

Thanks to Vincent Bechu for his work on this topic.

This reverts commit fba5767e.

Sorry, I went too quickly, there was difference between self and context

This reverts commit 7aa5fb76

> this change makes title empty when reply
nexedi/erp5!823 (comment 73439)

/reviewed-on nexedi/erp5!826

1. a inventory report module is added which user can add inventory report


2. in inventory report,  user should put information such as Owner, Warehouse... then call calculate product stock action


3. one line per product is then added automatically with current total quantity and total asset price


![Screenshot_2018-12-12_at_17.42.24](/uploads/98f8a4af66faadfdfd1d99b4400ff687/Screenshot_2018-12-12_at_17.42.24.png)


/reviewed-on nexedi/erp5!806

if i have a url like:
https://erp5xxx/form_idxxx?relative_item_relative_url=item_module/7817

with the old way, form id will be 7817

/reviewed-on nexedi/erp5!824

According to pep-0263, python scripts can define encoding magic on
first or second line.
If we use for example such a script:

```python
  # coding: utf-8
  return "héhé"
```

then using .read() was wrong, because it return the script with headers,
ie:

```python
  ## Script (Python) "test_coding"
  ##bind container=container
  ##bind context=context
  ##bind namespace=
  ##bind script=script
  ##bind subpath=traverse_subpath
  ##parameters=
  ##title=
  ##
  # coding: utf-8
  return "héhé"
```

so the coding magic is no longer in first line and pylint complains
with error like:

Cannot decode using encoding "ascii", unexpected byte at position 11 (invalid-encoded-data)]

/reviewed-on nexedi/erp5!825

only calculate exchange rate if necessary
use transaction cache
make getExchangeRate as local function