Added tree() method to EloquentCollection
Fixed pages sorting. Also deleting with child pages and corresponding entries
Just putting methods in alphabetic order
Add entry_type column to pages migration
Persist the instance statically so we can call Eloquent static methods against it.
Replaced findEntry() with find() because we now properly call static methods against our custom instance
Use find() with setFormat(false) to avoid unncesarry processing
Merge pull request #2973 from obrignoni/2.3/develop

2.3/dev Fixed Pages tree sorting and deleting