Migrate the move protect log as first sub type of the protection log,
because it does not have complex log parameter, which needs some way of
handling/migration.
It also keeps the gerrit change smaller and hopefully makes review
easier.
The other sub types of the protection log will be migrated in a later
patch set.
This allows use of gender on Special:Log. Old message is kept for use
in IRC. A test was added to ensure an unchanged IRC message.
Bug: T47988
Change-Id: I57b3bd8a7dc823acdbb56520d2364f5542283373
3964b4cc05