Dashboard Spam link uses wrong action

[caesarsgrunt]

The Spam link on the dashboard still uses action=deletecomment&dt=spam, rather than the new action=spamcomment.

Although this does spam the comment, it means that the previous status isn't stored and so it isn't correctly unspammed.

[caesarsgrunt]

Simple fix (changes action in spam link)

[caesarsgrunt]

Better patch (also combines deletecomment into the same function as all the other delete actions)

[caesarsgrunt]

The first patch just fixes the bug by changing the spam link to use the spamcomment action.

The second patch does the same, but also moves the deletecomment action into the same function as trashcomment, untrashcomment, spamcomment, and unspamcomment, since almost all code for it was duplicated. I should have merged this when I merged the others before....

[nacin]

Cross-referencing #11426. Incidentally, I have also merged the deletecomment action there. I also merged approvecomment and unapprovecomment -- and realistically, all six could be merged.

[azaozz]

Fixed in [12401]