UI: Update pull/fold related nodes sections

[bouncepaw]

Now:

I propose something like this:

The triangles make it look like the <details> tag, which should probably be used for this.

[bouncepaw]

A similar design can be done for external pullable/embeddable links

[flancian]

I like this, thank you! How did you produce this layout? Is it a mock?

[bouncepaw]

In the web inspector,

• Change text for .node-header
• Add float: left; to .pull-node auto-pull-button and change its text to the appropriate unicode triangles. Instead of floating to the left you can change swap .node-header and .pull-node auto-pull-button in the source so they appear in my order.

Some progress bars or other progress indicators for pulling might be desired.

And error reporting, yes.