[entity] fix deprecation warnings (closes #2423719)

merge oldstable in stable

Added tag cubicweb-debian-version-3.14.9-1 for changeset 68c762adf2d5

Added tag cubicweb-version-3.14.9 for changeset 9337812cef6b

[ui] provide an autocomplete RQL bar (closes #2439846)

[ajax] improve backward compatibility for redefined ajax functions (closes #2447189) If an ajax function from stdlib (e.g. js_reledit_form) was redefined in a cube, the cube version should still takes the precedence< => check for existing ajax function on deprecated controller _before_ checking ajax function availability on the new one.

prepare version 3.14.9

[composite] apply composite on new enty too (closes #2450679) Before this changesets, automatic deletion did not applied to entity created in the same transaction. This patch remove this filtering in the dedicated operation. The original filtering where introduced by 5d889b4928bb but no rational where found for this changes. The former behavior is seen as inconsistent and creates bug in some cubes.

[storage] relies on event=='deleted' to detect "delete" event (closes #2450680) When we delete a previously edited entity, it *will* have a cw_edited attribute even if the goal is to delete it. The function get an argument that explicitly contains the "delete" event. The code now uses that instead.

[composite] apply composite on new enty too Before this changesets, automatic deletion did not applied to entity created in the same transaction. This patch remove this filtering in the dedicated operation. The original filtering where introduced by 5d889b4928bb but no rational where found for this changes. The former behavior is seen as inconsistent and creates bug in some cubes.