[forms] fix RelationField bug with pending eids (eg inlined forms): we have to override process_form_value to avoid caching when recomputing is needed

[shell] rql() should use unsafe_execute when possible

[autoform] we should consider role when checking delete permission

don't update modification_date in repairing_mode (eg upgrade or shell)

[security] we should save back edited_attributes in case of multiple modification of an entity during the same transaction

tune startup logging

[schema] fix RelationSchema.has_perm to properly works with attribute relations

[schema] refactor/cleanup check_permissions

use a close_form method for consistency w/ open_form and allow overriding

add version info to deprecation warning

remove debug print

follow yams api change: attributes permissions are now defined for an 'update' action, no more 'add' / 'delete' which makes no sense in such case. fix afs.relations_by_section permissions checking of object relation on the way.