Updated mediawiki/extensions
Project: mediawiki/extensions/Translate  a37a19ad3cd73fa1ba058df6d892a17f7acd885e

Execute POST requests in serial manner at Special:PageMigration

The POST requests for creating the translation pages were in a
loop that lead to many parallel requests. They are now executed in
a serial manner by using an ajax dispatcher which returns the list
of promises.

Change-Id: I010dcb3a8390aeb0caa513b88f796b9da5807a12