- Removed duplicated content from page-type-templates (was more or less a variation of the content in templates.md)
- Removed built-in page-controls, which was a bit of a dumping ground for unconnected topics.
Moved the majority to page-type-templates
- Removed all recipes from "sitetree" docs, since they were outdated or hacky (like grouping of records, or implementing custom *children() method on subclasses)
- Added pagination, escaping, base_tag, CurrentMember to template docs
- Removed default_parent docs from SiteTree, as this setting doesn't have any effect looking at core