Page class

* Browse tree now returns false on bad path
Page, Output class

* Dropped old code (use_ajax, module templates)
Attr model, null, Database model

* Added null value handling when getting attribute to attr model
* Fixed database model missing variable
Page, Module class

* Fixed passing variables
Page, current

* Page allow current page setting
Merge branch 'dev' of ssh://github.com/just-paja/pwf into dev
Namespace protection