Use localstorage to store MMV preference for anon and temp users,
use regular user preference for non-temp accounts only
For embed default to wikitext for temp and regular users, html
for anon users
Bug: T340534
Change-Id: Ic19e8a6b6fbdeb2c86be14a33a306dd0f3088b1b
The MediaViewer and MultimediaViewer* instruments were disabled circa
October 2021 in Ie7dd8739efc.
This patch removes those instruments and any supporting code and data.
Notably, this patch does not remove the mw.mmv.logging.ViewLogger
instrument, which is responsible for logging image views.
Bug: T310890
Change-Id: I97d41be93849b2ae9d1adba6660546ea716657fd
