add step to create a Person to avoid duplicated code and add test to check that to prove that ERP5Site_newCredentialRecovery will work correctly in case if no question/answer is provided

update tests to follow last changes in erp5_credential. The changes were: 57e6dbf6, ee9adc59, 8ac9c40f

remove script because Base_getDefaultAssignmentArgumentDict is not required anymore and ERP5Site_registerCredentialRequest was merged with ERP5Site_newCredentialRequest.

refactor ERP5Site_newCredentialRequest to get categories from portal_preferences. Add condition to check if the alarm will be called to approve credential requests or one mail will be sent to user to approve it.

add new property to System Preference. This preference is used to know if the alarm will be called automatically or not.

TemplateTool API can find the appropriate name for the file.

Refactor code to follow last changes in SystemPreference_viewCredential form. Now all categories are returned in list and setCategoryList method is used to set all properties in assignment.

update to add category list in portal_preferences. This change is to follow the changes in erp5_credential

Refactor code to not hardcode of base categories. Now is possible use all base categories possible(and others non existing yet).

This is needed, because graph was not drawn.

Show the owner at Inventory module listbox because the inventories can be owned by multiple sections.

divergent movement can include trade model related movements, that should not be accepted.

For some reason res list can contain unicode strings (requinfo maybe).
This makes manage_debug_thread return a raw unicode object, which is
unreadable. So, if a unicode object is found, encode it as utf-8.

Because chdir/getcwd is global to the whole process, it is not thread-safe
and may cause very serious bugs like data loss (for example when 'os.remove'
or 'shutil.rmtree' are called with relative paths).

There still remain uses of 'chdir' in ERP5 Subversion. A temporary quick change
is done to reduce the probability of race conditions, but this should really be
fixed.