Updated mediawiki/extensions
Project: mediawiki/extensions/GettingStarted  90f884ee44db93dc4993f07b2cb6c00c7c4d8857

Change how presence of VisualEditor is determined

Meaning of isAvailable changed, so now just check for the VE tab,
which suits the purpose here (seeing if the VE tour is usable).

Bug: 60111
Change-Id: Ibaa701d89924aec4804d453f62a0b685a67d95f1