Edit button in wiki

While editing an article in the wiki, the Edit button is shown at the upper right. When I click on it, I just come to the same edit page again. The edit button makes no sense when I already in editing mode. It should changed to a Save button.

Added ~14206 label

Maybe we could just disable the button. @tauriedavis What do think?

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We should follow the same convention as when editing an issue or mr.

cc @awhildy

We should follow the same convention as when editing an issue or mr.

@tauriedavis Thank you, that makes sense!

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Mentioned in issue #19980 (closed)

Mentioned in merge request !7143 (merged)

Status changed to closed by merge request !7143 (merged)

Mentioned in commit jacobvosmaer-gitlab/gitlab-ce@a1ae0f7c