[web] stop having actions configurable through cwproperties: this clutter site management and .po files for a useless fonctionnality (which, where and how actions are displayed is handled by code)
# type attribute might already be there if migrating from
# version < 3.5 to version >= 3.5.3, BaseTransition being added
# in bootstrap_migration
if versions_map['cubicweb'][0] >= (3, 5, 0):
add_attribute('BaseTransition', 'type')
sync_schema_props_perms('state_of')
sync_schema_props_perms('transition_of')