Add admin facility to reconcile with a slave server

[bobbingwide]

In #34 I added a batch facility to perform reconciliation between the master and the slave site. In a couple of weeks time I'm travelling to NZ for a month. If I do any work on my live sites I'd like to be able to reconcile the changes in my local machine on return. Although the batch reconciliation appears to work I'm wary about using it. It all happens so fast! Even though I have the ability to revert to a previous revision I'm still nervous.

I added "Do Not Clone" logic in #37 so that I could avoid pushing and pulling new content that I don't actually want cloning.

Now I want to add a UI in the oik options > clone admin page to allow me to control the reconciliation. It's primarily for pulling new content created on the Live server: blocks, block examples, posts, pages and plugins.

Requirements

• [x] Admin interface to reconcile content between the master and a slave server
• [x] Ability to pull new content
• [x] Ability to pull new attachments
• [ ] Ability to prevent cloning of content marked 'Do Not Clone'
• [x] Ability to detect a post that's been updated in both master and slave
• [ ] Ability to list content that has not yet been cloned - for push.
• [ ] Batch interface should still work

Proposed solution

• Rename existing batch solution
• Develop new classes to support batch (CLI) and online processing
• Add a simple form to select the slave server and the post types to process.
• Doesn't need to use the WordPress admin page listing

[bobbingwide]

Ability to detect a post that’s been updated in both master and slave.

Not sure what to do here? Probably offer both push and pull. Can we also implement the compare function?

[bobbingwide]

Ability to list content that has not been cloned.

This is possible using a bw_table shortcode displaying the clone information as a field.

• In the admin page it should come as a separate section.
• It would lists the posts that have not been cloned and which don’t match existing posts ( by post_type and name ).
• Ideally this section would come before the mapping section... but it should take into account the mapping section to eliminate posts with the same name.

[bobbingwide]

While looking at the embed shortcode, since it's been changed in a recent version of WordPress I tried reconciling s.b/oikcom with oik-plugins.com. It appeared to want to import the oik_shortcodes/embed post even though it already existed. Needs investigating.

Explanation

There was a mismatch between post names. embed-2 and embed.

[bobbingwide]

What's more concerning is what happened when I performed the pull.

Two problems here.

1. PHP Notices.
2. I'll have to eliminate or escape the echos

[bobbingwide]

Not closing. New issue raised while trying to retest.