Add a test to make sure that even if source and destination are not defined on a mvt, invoice lines are still built

It should be consistent with Category setting, because both are used to
render domain tree to user by calling getCompactTranslatedTitle .

We only only need an usual test result proxy, we only need the additional
method getRunningTestCase

This commit in order to force the flush of files
containing test informations after each iteration.

Add option to specify several path where to find users file(s),
and benchmark suite file(s).

This runner is used by scalability test, it communicates
with ERP5 Master and launch test suite (using performance_tester).

Testnode code has been splitted. Runner class has been created for
each test types (unit and scalability).
Communication with SlapOS and ERP5 Master has been added.

These benchmarks are used during scalability tests.
A file which contains list of scalability users is also added.

Contain objects and scripts needed to perform scalability tests.

Without sort the item list is hard to select the variations and most of the time are many

- columns are now searchable
- title display line title if any; for consistency with all other reports
- title is no longer sortable properly. This is a little regression.
- use queries instead of raw where expression

Allow to close a draft position.

trade model and invoice transaction line should be in same invoice

so that we can invoke same tests in our favourite collection of business templates by using this mixin.

We should also support the case where user cannot access project module

The same grouping reference property is also used for mirror section, so if one side is doing grouping, the group must also be valid for the other side.

Usually subscription item portal type does not have a proper tracking, so you may want to use this alarm only on some item portal types

In some configurations this might be incorrect, but for most cases it is not a
good idea that a price that is currently beeing edited gets applied.