BusinessTemplate: do not fail when regenerating roles of a path that no longer exist
BT: fix misleading error message
remove non existing action
ZODB Components: Add further information when pylint cannot be imported.
erp5_core: A function was renamed but some code has not been updated accordingly (24ccf35).
erp5_core: Cosmetic: Get rid of a pylint warning.
ERP5Form: Reset Form Field Value Cache on all nodes upon modification.

Before, the field value cache was only invalidated on the node where a field
has been modified, so similarly to reset of ZODB Components, implement
synchronization on all nodes through ZODB Cache Cookie.
ZODB Components: Rename common view to ComponentMixin_view (naming conventions and clash with erp5_pdm).