Updated mediawiki/extensions
Project: mediawiki/extensions/UploadWizard  536652847002182c7ec169eec477db77a5c56060

Wait until iframe is fully loaded before submitting form

Two issues fixed:
- Race condition: If the token was returned by the API before the
  load event of the iframe fired, the form was submitted to the
  default target (= current page) --> the result of the API request
  is displayed on the page instead of running in the background
  Now making sure the load event of the iframe fired before and
  the form target is set to the iframe
- The hash (#) as source of the iframe made the load event never
  fire in Mozilla Firefox 29. Using the the source that was used
  before I74bbb0d4fa.

Bug: 65406
Change-Id: If04206fa99312977aa06c4bd3dfd1f897d6ce7b7