Updated mediawiki/extensions
Project: mediawiki/extensions/WikiEditor  cf897155b047491e8fa2f9adf40790eab07fc412

jquery.wikiEditor.iframe: Restore function signatures

Follows-up 1a2daca06a6ad637262356, which broke this file due to
a bad find/replace action.

Change-Id: Ia6db450296ac579dade2ec4ff116e2519d69c6d3