Use native dialogs, with native style

dialogs should native dialogs with exceptions for audio/video record and contact picker components

added 1 deleted label

changed the description

changed milestone to %Itération 21

assigned to @ababi

added SprintTo review label

mentioned in commit 6e43a456

removed SprintTo review label

closed

mentioned in issue #631 (closed)

mentioned in issue #718 (closed)

mentioned in issue #929 (closed)