[config] turn internal configuration methods building appobjects search path into normal method rather than class method
as this is useless and make path filters difficult to override (we had to
override the class attribute, as instance attributes were not seen).
Also rename related methods for consistency with current vocabulary
add_relation_type('prefered_form')
rql('SET X prefered_form Y WHERE Y canonical TRUE, X identical_to Y')
commit()
drop_attribute('EmailAddress', 'canonical')
drop_relation_definition('EmailAddress', 'identical_to', 'EmailAddress')
if 'see_also' in schema:
sync_schema_props_perms('see_also', syncprops=False, syncrdefs=False)