Updated mediawiki/extensions
Project: mediawiki/extensions/UploadWizard  e5ffc6e39eecb7851fa4063c5a8d69c08201e6f4

Update and remove unnecessary messages

Remove default "Thanks for using our new upload tool!"
message as well as the translation link, as the tool is
neither new or in dire need of translation. A custom
welcome message can now be added with headerMessage in
the config if one desires.

Also, update i18n for mwe-upwiz-thanks-explain to be
more general.

Bug: 36149
Change-Id: I5fa30bf6b9690511e1dcaaa66d944f412672aa7b