Render all views when settings are changed.

We need to render all views when settings are changed. This shouldn't be
necessary,but we currently have no clean way to determining which views
need to be rendered when settings change. Hence, we just render all
views when settings are changed.

Change-Id: I6dec57ce02877e9456c37d04743fd53a8ca8d355
Merge topic 'render_on_settings_change' into next

cf8e5d2a Render all views when settings are changed.