fixup! Remove "GAP must be set on accounts" constraint from erp5_accounting.
CMFActivity: Allow defining node identifier in zope configuration file.

Allows giving more compact and user-meaningful names if desired.
If used, makes in-ZODB data (processing/validation roles) independent
from process' network binding, removing the need to re-configure
CMFActivity after changing network.
Also, update AlarmTool usage of getCurrentNode (and related).
Also, replace AlarmTool's manageAlarmNode input field with a select for
convenience.
CMFActivity: typo in warning message.
Portal Types Classes: Fix race condition on reset with Workflod Methods.

Sometimes, after saving a Component, Interaction Workflows Methods were not
created, thus reset could not be done later on.
accounting: fix a TALES always showing PTG on accounting line destination
Accounting: display function & project at line level
Accounting: show a project column if more than one project is used in this transaction
Accounting: display function in the main view if function is activated as an analytic column
Do not hard code any style attributes in posts' content (we can style using CSS)
make description property translatable, like title and short_title.
modify import path of PIL.Image for pillow.
fixup! Accounting: display function in the main view if function is activated as an analytic column
testXHTML: more verbose error message
fixup! testXHTML: more verbose error message
BigFile.py: add missing import
BigFile.py: use a default chunck size better compatible with default cache configuration

Before chuncks were 1MB big, so with a default zope cache size of 5000 objects,
it was possible to consume 5GB even though the BigFile was filled little by
little with many different transactions.
Base.getPropertyLIst: Use _MARKER instead of None because this method
should always return a list

Also, it will follow the parameters set to the method getProperty
erp5_web_renderjs_ui: Allow breadcrumbs to go temporarily go "Home"
testXHTML: only title and short title should use erp5_ui
modify import path of PIL.Image for pillow.