[DEPRECATING CHANGE] icons: Deprecate 'bookmark' icon
[DEPRECATING CHANGE] icons: Deprecate 'bookmark' icon

Change-Id: I1aee896a33f1070139687f8170b6db9ed87e79e4

wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui