Enhancement: Prev/Next and AddNew buttons in edit form

[wernerkrauss]

Lumberjack is different from a normal GridField or ModelAdmin. It's missing the "prev/next" buttons and "add new" on the bottom right when editing a page.

Right now, Lumberjack redirects to the Page's edit view, which leaves the GridField.

If I add $this->addComponent(GridFieldDetailForm::create(null, true, false)); to my Lumberjack Gridfield Config, I can at least get the prev/next buttons, but it removes the SiteTree listing from the left.

The Add button doesn't work out of the box, cause it'll add the new pages on root and not as a subpage where I added Lumberjack.