Combine 'Edit' and 'Quick Edit' links for comments

[caesarsgrunt]

Whilst it is occasionally necessary to visit the edit page for a comment rather than quick-editing it, this is rare and the existence of both links is redundant.

Furthermore, Edit is the only action link which loads a new page rather than working on the current page, which could be confusing to first-time users.

I propose combining the functionality of the two links as follows :

• Replace both links by one, called Edit.

• Make the new link go to the edit page when JS is not available, but otherwise perform as Quick Edit currently does.

• Add an Advanced link to the Quick Edit dialog, which takes the user to the Edit page.

An alternative would be to add the ability to change the comment date to the QE dialog. Then Edit could perhaps be removed altogether, since this is the only thing for which you must go to the Edit page.

Beat you to it caesarsgrunt ;-)

Dup of #11273.