Has sat there since the first commit in 2010 (r73055), but not used.
I imagine it was was a design prototype at some point.
Also fix a few minor eslint warnings about line length, and remove the
one-off "ext-" prefix and capitilised "WikiEditor" CSS class name that
the rest of the repo doesn't use.
Change-Id: Id0eeb456fffdb490a6a86974288e57099e53ce71
Following-up on I9fb7e66bf925eb9a8260d6245d2a7db54a7a2fec
this converts the link-text field to OOUI.
Bug: T289214
Change-Id: I17f34a8cbf72b80f3916581867e5828d9b129789
In order to get a better look-up experience (images, description,
redirects, and disambigutation pages listed last), swich from
a custom title-autocomplete input (that used jquery.suggestions)
to OOUI's standard one (which is used in a bunch of other places
in MediaWiki).
This means a fair bit of code can be deleted from
jquery.wikiEditor.dialogs.config.js, and some of it moved to
the new OOUI classes.
This patch aims to be the minimum required, and so leaves a few
things for subsequent patches (such as converting the other parts
of the insert-link dialog to OOUI).
Bug: T289214
Change-Id: I9fb7e66bf925eb9a8260d6245d2a7db54a7a2fec
