'Undo' of trash/uncurate action does not work

[AaronHolbrook]

http://d.pr/i/1huTV/MjwUmXiL

@ayebare this would complement the work you just did with re-labeling trash to uncurate nicely. Mind taking a look?

[ayebare]

Thanks, will do @AaronHolbrook

[ayebare]

@AaronHolbrook Currently the curated post is deleted when a post is put in trash. I suggest changes below to have trashing fixed. This is the proposed relationship between the original post and curated post for each action.

Action: Uncurate original post

• Put the curated post in trash

Action: Curate post

• Check if the post has a curated counter part in trash using | function is_curated( $post = 0 )
• If it does, remove the curated post from trash. Else carry out a new curation.

Action: Trash curated post.

• Uncurate orginal post but don't delete original post curation meta data.

Action : Trash original post.

• Trash curated post.

Action: Untrash original post

• Untrash curated post if the post is curated.

Action: Untrash Original post

• Untrash curated post.

Action: Untrash Curated post

• Curate original post.
• We'll aslo need a function to check if the curated post is in trash. This will often be used alongside the is_curated function especially
  for the views e.g edit post view.

Please let me know if I could have missed something fundamental.

[AaronHolbrook]

@ayebare I like that you broke out each action possible.

I think we can do this without having a real 'trash' for curated posts but instead rely on the originating post's meta store. FYI I believe 'trash' is disabled for the cur-curator post type

Action: Uncurate Original post

• simply uncurate fully, as this would not lead to any prompt to 'undo' anything

Action: Curate post

• check post's meta for trashed status, change status to live; create new curated post

Action: Trash curated post

• Uncurate original post, don't delete post curation meta data; but set curation status to: trash

Action: Trash original post

• Trash original post, uncurate, set curated status to original:trashed

Action: Untrash original post

• Untrash curated post if status was set to original:trashed (i.e. the post was curated at the time of trashing)

Action: Untrash curated post

• Curate original post, set status meta of original post to curated

[ayebare]

Created a PR for the fix.