This is currently defined in MobileFrontend which uses it for
Special:MobileWatchlist.
We shouldn't use two messages for 2 purposes so let's give it
its own dedicated message.
Change-Id: Id5df6aad20815b88b8bd2685514e7eb3237a5b3b
This is programmatic output from python3 scripts/migrate.py
This will result in a Minerva skin dependent on MobileFrontend.
Post merge we will rename message keys to have minerva- prefix
Bug: T166748
Change-Id: Iff1f7e63e796cc5d4a6d2ab0370e0c33248d2fce