Updated mediawiki/extensions
Project: mediawiki/extensions/WikiEditor  37a1deb79910fed0dd04a7faeb4682afa0949e09

document.selection is undefined in IE11

IE11 replaced document.selection by window.getSelection, which breaks
dialogs in WikiEditor, because document.selection.createRange was
accessed without check. Inserting this check unbreaks the dialogs.

Bug: 57489
Change-Id: I70d49fb43bbf7602f43e9a8086ecd32027cb6d6f