It avoids to clutter console output.

This ends up with using passed log parameter.

This avoids changing running user's git environment.

Log environment can be used to output to console.

This test could be splited into smaller portions in future, like:

  Core
  Configurator
  Web and KM ...

Define a convention for Zelenium tests, which is start with "testFuncional"

This test case is inspired into prepateFunctionalTest, and it still working
in progress.

This is required for ZEO.

cf commit b9ceb45e

This reverts commit 1b1859b9
and monkey-patch docutils instead.

See commit ef5d6d9c

This reverts partially commit 2b92f990
("expand: optimize creation of new movements by not using propertyMap+_edit").

This reverts commit ff04daef.

This was an attempt to optimize simulation.

* BusinessConfiguration_setupUNGWizardBT5 does not need 'Manager' proxy
* BusinessConfiguration_setupUNGPreferences, because it adds a 'Preference Configurator Item', needs a 'Manager' proxy

For now, default 'Text Area' and 'FCK Editor' are available by default, and only check if Xinha Editor is available

This softens dependency to activate more objects even in case of failed
activities. The downside is that 'activity_count' can't be used to limit the
number of processing nodes.

- reduce probability and cost of ConflictError by posting the
  activity result by activity
- do not post None (to force it, it's still possible to forge an
  ActiveResult object containing the None value)
- allow grouped messages to post results (previous implementation was not
  working, and this required to change the API of grouping methods)

More changes should be done so that Activity Tool provides an API to activate
an object using only its path.

It defaults to .01 and must be in the interval ]0, 1]
If a message expands to N objects, then it costs N / group_method_cost
and activity tool stop reserving messages the sum of all costs exceeds 1.

By default, this preserves original behaviour, i.e. MAX_GROUPED_OBJECTS = 100

Value 1 is not rejected to allow generic coding
(ex: activity_kw['group_method_cost'] = 1. / packet_size)