[UX] Improve link text for menu settings

[jenlampton]

On the admin page for menus, the drop-button for accessing the list of menu links reads Edit links. Since Edit isn't exactly the right choice here, I recommend changing this to Manage links instead.

What do people think? Is Edit providing value here, because this setting is saved in the database, or should we try to improve this language?

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PR: backdrop/backdrop#2592

[klonos]

I don't object to this, but perhaps reconsider things after implementing #475? ...or merge this request with that issue?

[TopperSaburo]

Great, although I do agree with @klonos about implementation of #475 before implementation of the manage links feature change. I definitely agree with you that manage links would be a more comprehensive feature description. 👍

[matthui]

I tested it and the "manage links" works as expected.

[quicksketch]

Thanks for the review @matthui and the PR @jenlampton! With no opposition and seeming an improvement, I've merged backdrop/backdrop#2592 into 1.x and 1.12.x, though it's likely to change again after #475 is implemented.